Vulnerability-Lookup

CVE-2026-18556 (GCVE-0-2026-18556)

Vulnerability from cvelistv5 – Published: 2026-08-01 19:59 – Updated: 2026-08-05 03:56

Title

Unauthenticated administrative account takeover

Summary

Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass. This issue affects N-central: through 2026.1.

Severity

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: active Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-04 00:00 UTC

CWE

CWE-288 - Authentication bypass using an alternate path or channel

Assigner

N-able mitre root

References

3 references

URL	Tags
https://uptime.n-able.com/
https://www.n-able.com/blog/n-central-security-up…	vendor-advisory
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
N-able	N-central	Affected: 0 , ≤ 2026.1 (custom)

Date Public

2026-08-01 19:56

Show details on NVD website

JSON

To clipboard

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CNVD-2026-31828

Vulnerability from cnvd - Published: 2026-08-12

Title

N-able N-central授权问题漏洞

Description

N-able n-central是加拿大N-able公司的一款远程监控与管理系统。 N-able N-central 2026.1及之前版本存在安全漏洞。攻击者可利用该漏洞导致身份验证绕过。

Severity

高

Formal description

厂商尚未提供漏洞修复方案，请关注厂商主页更新： https://uptime.n-able.com/

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-18556

Impacted products

Name
N-able N-central <=2026.1

Show details on source website

JSON

To clipboard

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-18556",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-18556"
    }
  },
  "description": "N-able n-central\u662f\u52a0\u62ff\u5927N-able\u516c\u53f8\u7684\u4e00\u6b3e\u8fdc\u7a0b\u76d1\u63a7\u4e0e\u7ba1\u7406\u7cfb\u7edf\u3002\n\nN-able N-central 2026.1\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u8eab\u4efd\u9a8c\u8bc1\u7ed5\u8fc7\u3002",
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-31828",
  "openTime": "2026-08-12",
  "products": {
    "product": "N-able N-central \u003c=2026.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-18556",
  "serverity": "\u9ad8",
  "submitTime": "2026-08-06",
  "title": "N-able N-central\u6388\u6743\u95ee\u9898\u6f0f\u6d1e"
}

FKIE_CVE-2026-18556

Vulnerability from fkie_nvd - Published: 2026-08-01 20:16 - Updated: 2026-08-05 05:16

Severity

7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Summary

Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass. This issue affects N-central: through 2026.1.

References

URL	Tags
a5532a13-c4dd-4202-bef1-e0b8f2f8d12b	https://uptime.n-able.com/	Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0	https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18556	US Government Resource
134c704f-9b21-4f2e-91b3-4a467353bcc0	https://www.n-able.com/blog/n-central-security-update-august-2-2026	Vendor Advisory

Impacted products

	Vendor	Product	Version
	n-able	n-central	*

JSON

To clipboard

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          "defaultStatus": "unaffected",
          "product": "N-central",
          "vendor": "N-able",
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  "cisaActionDue": "2026-08-07",
  "cisaExploitAdd": "2026-08-04",
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}

GHSA-FFFV-7W63-P3XW

Vulnerability from github – Published: 2026-08-01 21:31 – Updated: 2026-08-04 21:30

Details

Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.

This issue affects N-central: through 2026.1.

Severity

7.4 (High)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

8.2 (High)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-18556"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-288"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-01T20:16:37Z",
    "severity": "HIGH"
  },
  "details": "Authentication bypass using an alternate path or channel vulnerability in N-able N-central allows Authentication Bypass.\n\nThis issue affects N-central: through 2026.1.",
  "id": "GHSA-fffv-7w63-p3xw",
  "modified": "2026-08-04T21:30:25Z",
  "published": "2026-08-01T21:31:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18556"
    },
    {
      "type": "WEB",
      "url": "https://uptime.n-able.com"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-18556"
    },
    {
      "type": "WEB",
      "url": "https://www.n-able.com/blog/n-central-security-update-august-2-2026"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

NCSC-2026-0275

Vulnerability from csaf_ncscnl - Published: 2026-08-03 07:04 - Updated: 2026-08-07 07:20

Summary

Kwetsbaarheden verholpen in N-able N-central

Scope

2 vulnerabilities in this advisory, including CVE-2026-18556.

CVE-2026-18556

N-able N-central versions through 2026.1 contain an authentication bypass vulnerability exploitable via an alternate path or channel, requiring vendor mitigations and adherence to CISA's BOD 26-04 guidance.

7.4 (High)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Known affected: 1 product

Open the full advisory

WID-SEC-W-2026-2621

Vulnerability from csaf_certbund - Published: 2026-08-02 22:00 - Updated: 2026-08-02 22:00

Summary

N-able N-Central: Mehrere Schwachstellen ermöglichen Umgehen von Sicherheitsvorkehrungen

Severity

Mittel

Scope

2 vulnerabilities in this advisory, including CVE-2026-18556.

CVE-2026-18556

Known affected: 1 product

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-18556 (GCVE-0-2026-18556)

CNVD-2026-31828

FKIE_CVE-2026-18556

GHSA-FFFV-7W63-P3XW

NCSC-2026-0275

WID-SEC-W-2026-2621

Tags

Sightings

Nomenclature

Related by attack behaviour