FKIE_CVE-2025-26594
Vulnerability from fkie_nvd - Published: 2025-02-25 16:15 - Updated: 2026-06-29 21:16
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/
Summary
A use-after-free flaw was found in X.Org and Xwayland. The root cursor is referenced in the X server as a global variable. If a client frees the root cursor, the internal reference points to freed memory and causes a use-after-free.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| tigervnc | tigervnc | - | |
| x.org | x_server | * | |
| x.org | xwayland | * | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 |
{
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"lessThan": "21.1.16",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
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"status": "affected",
"version": "22.0.0",
"versionType": "semver"
}
]
},
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"cpes": [
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],
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"packageName": "xorg-x11-server-Xwayland",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat",
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"version": "0:24.1.5-3.el10_0",
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]
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"cpes": [
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"defaultStatus": "affected",
"packageName": "tigervnc",
"product": "Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:1.1.0-25.el6_10",
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}
]
},
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]
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},
{
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"cpes": [
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"product": "Red Hat Enterprise Linux 8.2 Advanced Update Support",
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"version": "0:1.9.0-15.el8_2.13",
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{
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"vendor": "Red Hat",
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{
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"cpes": [
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],
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"packageName": "tigervnc",
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"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:1.14.1-1.el9_5.1",
"versionType": "rpm"
}
]
},
{
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"cpe:/a:redhat:enterprise_linux:9::appstream",
"cpe:/a:redhat:enterprise_linux:9::crb"
],
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"packageName": "xorg-x11-server",
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"vendor": "Red Hat",
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"version": "0:1.20.11-28.el9_6",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:enterprise_linux:9::appstream",
"cpe:/a:redhat:enterprise_linux:9::crb"
],
"defaultStatus": "affected",
"packageName": "xorg-x11-server-Xwayland",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:23.2.7-3.el9_6",
"versionType": "rpm"
}
]
},
{
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"cpes": [
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],
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},
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{
"lang": "es",
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}
],
"id": "CVE-2025-26594",
"lastModified": "2026-06-29T21:16:33.170",
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
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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.
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.
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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.
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