Common Weakness Enumeration
CWE-362
Allowed-with-ReviewConcurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Abstraction: Class · Status: Draft
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
3229 vulnerabilities reference this CWE, most recent first.
CVE-2026-82543 (GCVE-0-2026-82543)
Vulnerability from cvelistv5 – Published: 2026-08-30 12:45 – Updated: 2026-08-31 16:48 X_Open Source
VLAI
EPSS
VEX
Title
vastsa FileCodeBox Pickup Limit views.py update_file_usage race condition
Summary
A vulnerability was detected in vastsa FileCodeBox up to 2.3. This vulnerability affects the function update_file_usage of the file apps/base/views.py of the component Pickup Limit Handler. Performing a manipulation results in race condition. It is possible to initiate the attack remotely. The exploit is now public and may be used. Upgrading to version 2.5.0 is able to resolve this issue. The patch is named 8d7d856c62d73badd0797eb4daec8d2ff10a403a. Upgrading the affected component is recommended.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 16:48 UTC
CWE
- CWE-362 - Race Condition
Assigner
References
9 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/397060 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/397060/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-82543 | third-party-advisory |
| https://vuldb.com/submit/891416 | third-party-advisory |
| https://github.com/vastsa/FileCodeBox/issues/482 | exploitissue-tracking |
| https://github.com/vastsa/FileCodeBox/pull/487 | issue-trackingpatch |
| https://github.com/vastsa/FileCodeBox/commit/8d7d… | patch |
| https://github.com/vastsa/FileCodeBox/releases/ta… | patch |
| https://github.com/vastsa/FileCodeBox/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| vastsa | FileCodeBox |
Affected:
2.0
Affected: 2.1 Affected: 2.2 Affected: 2.3 Unaffected: 2.5.0 cpe:2.3:a:vastsa:filecodebox:*:*:*:*:*:*:*:* |
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CVE-2026-82364 (GCVE-0-2026-82364)
Vulnerability from cvelistv5 – Published: 2026-08-29 11:00 – Updated: 2026-08-31 22:04
VLAI
EPSS
VEX
Title
macrozheng mall Order Submission submit race condition
Summary
A security vulnerability has been detected in macrozheng mall up to 1.0.3. This impacts an unknown function of the file /order/submit of the component Order Submission. The manipulation leads to race condition. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is said to be difficult. The vendor deleted the GitHub issue for this vulnerability without and explanation.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 21:17 UTC
CWE
- CWE-362 - Race Condition
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/396780 | vdb-entry |
| https://vuldb.com/vuln/396780/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-82364 | third-party-advisory |
| https://vuldb.com/submit/887361 | third-party-advisory |
| https://github.com/macrozheng/mall/issues/983 | issue-tracking |
| https://github.com/macrozheng/mall/ | product |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| macrozheng | mall |
Affected:
1.0.0
Affected: 1.0.1 Affected: 1.0.2 Affected: 1.0.3 cpe:2.3:a:macrozheng:mall:*:*:*:*:*:*:*:* |
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CVE-2026-82258 (GCVE-0-2026-82258)
Vulnerability from cvelistv5 – Published: 2026-08-28 10:49 – Updated: 2026-08-31 18:36
VLAI
EPSS
VEX
Title
SvelteKit 2.38.0 before 2.60.1 Cross-User Data Disclosure via query.batch
Summary
SvelteKit versions from 2.38.0 before 2.60.1 contain a race condition in query.batch that allows concurrent requests from different users to merge under a single request context. Attackers can exploit specific timing conditions to access sensitive data from other users' concurrent requests.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 18:36 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/sveltejs/kit/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/sveltekit-2.… | third-party-advisory |
Impacted products
Date Public
2026-05-14 00:00
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CVE-2026-79625 (GCVE-0-2026-79625)
Vulnerability from cvelistv5 – Published: 2026-09-30 09:23 – Updated: 2026-09-30 13:49
VLAI
EPSS
VEX
Title
Improper Synchronization in Monitoring in CODESYS Control Runtime
Summary
Affected products do not properly synchronize access to their monitoring functionality. When multiple clients send concurrent requests, this may lead to incorrect reads or writes, or to corruption of internal memory structures. An authenticated remote attacker with monitoring access can exploit this issue to cause incorrect data processing or a denial-of-service condition.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 13:49 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
1 reference
Impacted products
18 products
| Vendor | Product | Version | |
|---|---|---|---|
| CODESYS | Control RTE (SL) |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Control RTE (for Beckhoff CX) SL |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Control Win (SL) |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Runtime Toolkit |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Safety SIL2 |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | HMI (SL) |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Development System 3 |
Affected:
3.0.0.0 , < 3.5.22.40
(semver)
|
|
| CODESYS | Control for BeagleBone SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for emPC-A/iMX6 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for IOT2000 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for Linux ARM SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for Linux SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for PFC100 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for PFC200 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for PLCnext SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for Raspberry Pi SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Control for WAGO Touch Panels 600 SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
|
| CODESYS | Virtual Control SL |
Affected:
3.5.0.0 , < 4.23.0.0
(semver)
|
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"metrics": [
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"other": {
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CVE-2026-77894 (GCVE-0-2026-77894)
Vulnerability from cvelistv5 – Published: 2026-09-08 17:13 – Updated: 2026-10-01 22:55
VLAI
EPSS
VEX
Title
Windows Installer Elevation of Privilege Vulnerability
Summary
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Installer allows an authorized attacker to elevate privileges locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 00:00 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
20 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.7725
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.7725
(custom)
|
|
| Microsoft | Windows 11 version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7582
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.7582
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.9445
(custom)
|
|
| Microsoft | Windows 11 Version 25H2 |
Affected:
10.0.26200.0 , < 10.0.26200.9445
(custom)
|
|
| Microsoft | Windows 11 version 26H1 |
Affected:
10.0.28000.0 , < 10.0.28000.2954
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.26349
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.26349
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.23398
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.23398
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.9512
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.9245
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.5622
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.33438
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.33438
(custom)
|
Date Public
2026-09-08 14:00
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"product": "Windows 11 Version 25H2",
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"product": "Windows Server 2012 (Server Core installation)",
"vendor": "Microsoft",
"versions": [
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"product": "Windows Server 2012 R2",
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"product": "Windows Server 2016",
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"product": "Windows Server 2019",
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CVE-2026-77762 (GCVE-0-2026-77762)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:19 – Updated: 2026-09-30 14:50
VLAI
EPSS
VEX
Title
Apache Tomcat: Stale HPACK emitter injects trailers into recycled pooled Request
Summary
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat allows an attacker to inject trailer fields into another HTTP/2 request.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.39 through 9.0.121.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fix the issue.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 15:40 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/y5r9fvjo7ol24mkoy… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.25
(semver)
Affected: 10.1.0-M1 , ≤ 10.1.59 (semver) Affected: 9.0.39 , ≤ 9.0.121 (semver) Affected: 8.5.59 , ≤ 8.5.100 (semver) Unaffected: 0 , ≤ 7.0.109 (semver) |
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CVE-2026-77638 (GCVE-0-2026-77638)
Vulnerability from cvelistv5 – Published: 2026-08-20 20:52 – Updated: 2026-08-27 16:06
VLAI
EPSS
VEX
Summary
Tor before 0.4.9.11 is prone to a race condition where in just the right circumstances a rendezvous point could man-in-the-middle (impersonate) the onion service that the client was trying to reach.
Severity
8.9 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 15:44 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| torproject | Tor |
Affected:
0.3.5.3-alpha , < 0.4.9.11
(custom)
cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:* |
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CVE-2026-77633 (GCVE-0-2026-77633)
Vulnerability from cvelistv5 – Published: 2026-09-22 15:28 – Updated: 2026-09-25 23:38
VLAI
EPSS
VEX
Title
Cloudreve: Storage-quota TOCTOU race allows quota bypass and storage-based denial of service
Summary
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Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 23:38 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/cloudreve/cloudreve/security/a… | x_refsource_CONFIRM |
| https://github.com/cloudreve/cloudreve/commit/732… | x_refsource_MISC |
| https://github.com/cloudreve/cloudreve/releases/t… | x_refsource_MISC |
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CVE-2026-77063 (GCVE-0-2026-77063)
Vulnerability from cvelistv5 – Published: 2026-08-28 19:54 – Updated: 2026-08-31 18:40
VLAI
EPSS
VEX
Title
multer vulnerable to file size limit bypass via async fileFilter race condition
Summary
multer is a middleware for handling multipart/form-data in Node.js. When an application uses an asynchronous fileFilter together with the fileSize limit, a race condition in multer's file stream handling can allow a file that exceeds the configured size limit to bypass the size-limit rejection. All versions before 2.3.0 are affected. The impact is limited because the underlying multipart parser still truncates the stream at the size limit, so this is a bypass of the limit rejection rather than uncontrolled resource consumption. The issue is fixed in multer 2.3.0. Upgrade to multer 2.3.0 to remediate.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 18:40 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
Impacted products
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CVE-2026-76393 (GCVE-0-2026-76393)
Vulnerability from cvelistv5 – Published: 2026-08-19 21:35 – Updated: 2026-08-26 19:36
VLAI
EPSS
VEX
Title
Race Condition during Model Upload through the REST API in Splunk AI Toolkit
Summary
In Splunk AI Toolkit versions below 6.0.0, a user who can upload models could overwrite a model being uploaded by another user by sending a concurrent upload request for the same model name, causing the resulting model lookup entry to reference attacker-controlled content. The race condition is possible because Splunk AI Toolkit does not verify that the uploaded content belongs to the request that creates the model lookup entry. For more information see Troubleshoot the Splunk Machine Learning Toolkit (https://help.splunk.com/en/splunk-cloud-platform/apply-machine-learning/machine-learning-toolkit-user-guide/5.5.0/troubleshooting-mltk/troubleshoot-the-splunk-machine-learning-toolkit) in the Splunk documentation.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 19:35 UTC
CWE
- CWE-362 - The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Splunk | Splunk AI Toolkit |
Affected:
5.7 , < 6.0.0
(custom)
|
Date Public
2026-08-19 00:00
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Mitigation
Architecture and Design
In languages that support it, use synchronization primitives. Only wrap these around critical code to minimize the impact on performance.
Mitigation
Architecture and Design
Use thread-safe capabilities such as the data access abstraction in Spring.
Mitigation
Architecture and Design
- Minimize the usage of shared resources in order to remove as much complexity as possible from the control flow and to reduce the likelihood of unexpected conditions occurring.
- Additionally, this will minimize the amount of synchronization necessary and may even help to reduce the likelihood of a denial of service where an attacker may be able to repeatedly trigger a critical section (CWE-400).
Mitigation
Implementation
When using multithreading and operating on shared variables, only use thread-safe functions.
Mitigation
Implementation
Use atomic operations on shared variables. Be wary of innocent-looking constructs such as "x++". This may appear atomic at the code layer, but it is actually non-atomic at the instruction layer, since it involves a read, followed by a computation, followed by a write.
Mitigation
Implementation
Use a mutex if available, but be sure to avoid related weaknesses such as CWE-412.
Mitigation
Implementation
Avoid double-checked locking (CWE-609) and other implementation errors that arise when trying to avoid the overhead of synchronization.
Mitigation
Implementation
Disable interrupts or signals over critical parts of the code, but also make sure that the code does not go into a large or infinite loop.
Mitigation
Implementation
Use the volatile type modifier for critical variables to avoid unexpected compiler optimization or reordering. This does not necessarily solve the synchronization problem, but it can help.
Mitigation MIT-17
Architecture and Design
Operation
Strategy: Environment Hardening
Run your code using the lowest privileges that are required to accomplish the necessary tasks [REF-76]. If possible, create isolated accounts with limited privileges that are only used for a single task. That way, a successful attack will not immediately give the attacker access to the rest of the software or its environment. For example, database applications rarely need to run as the database administrator, especially in day-to-day operations.
CAPEC-26: Leveraging Race Conditions
The adversary targets a race condition occurring when multiple processes access and manipulate the same resource concurrently, and the outcome of the execution depends on the particular order in which the access takes place. The adversary can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance, a race condition can occur while accessing a file: the adversary can trick the system by replacing the original file with their version and cause the system to read the malicious file.
CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.