> CVE-2025-26595 [HIGH]

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PUBLISHED
2025-02-25 16:15
MODIFIED
2025-05-13 20:15
CVSS_SCORE V3
7.8
EPSS (Prob. Exploit)
0.44%
Top 61.7%
DATA SOURCES:
NVD 🔗 2025-10-18 RED HAT 🔗 2025-10-18 CVE PROJECT 🔗 2026-01-19 FIRST EPSS 🔗 2026-11-08 OSV 🔗 2026-11-08 MSRC 🔗 2026-02-01

> DESCRIPTION

A buffer overflow flaw was found in X.Org and Xwayland. The code in XkbVModMaskText() allocates a fixed-sized buffer on the stack and copies the names of the virtual modifiers to that buffer. The code fails to check the bounds of the buffer and would copy the data regardless of the size.

> AFFECTED_PRODUCTS

Red Hat - Red Hat Enterprise Linux 10
Version: 24.1.5
Red Hat - Red Hat Enterprise Linux 8
Version: 1.13.1
Red Hat - Red Hat Enterprise Linux 9
Version: 1.14.1
Red Hat - Red Hat Enterprise Linux 9
Version: 1.20.11
Red Hat - Red Hat Enterprise Linux 9
Version: 23.2.7
Red Hat - Red Hat Enterprise Linux 9.4 Extended Update Support
Version: 1.13.1
Red Hat - Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
Version: 1.11.0
Red Hat - Red Hat Enterprise Linux 8.4 Telecommunications Update Service
Version: 1.11.0
Red Hat - Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions
Version: 1.11.0
Red Hat - Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
Version: 1.12.0
Red Hat - Red Hat Enterprise Linux 8.6 Telecommunications Update Service
Version: 1.12.0
Red Hat - Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions
Version: 1.12.0
Red Hat - Red Hat Enterprise Linux 8.2 Advanced Update Support
Version: 1.9.0
Red Hat - Red Hat Enterprise Linux 9.2 Extended Update Support
Version: 1.12.0
Red Hat - Red Hat Enterprise Linux 7 Extended Lifecycle Support
Version: 1.8.0
Red Hat - Red Hat Enterprise Linux 7 Extended Lifecycle Support
Version: 1.20.4
Red Hat - Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
Version: 1.11.0
Red Hat - Red Hat Enterprise Linux 8.8 Extended Update Support
Version: 1.12.0

> CVSS V3 METRICS

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

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Local (L)
Exploit nécessite un accès local au système
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
Low (L)
Authentifié avec compte utilisateur basique
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
High (H)
Modification totale des données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
High
Modification totale des données possible
Disponibilité
High
Interruption totale du service possible

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: xorg-x11-server-Xwayland security update
An update for xorg-x11-server-Xwayland is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...
Red Hat Security Advisory: xorg-x11-server-Xwayland security update
An update for xorg-x11-server-Xwayland is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability...
Red Hat Security Advisory: xorg-x11-server security update
An update for xorg-x11-server is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring S...
Red Hat Security Advisory: tigervnc security update
An update for tigervnc is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterpris...
Red Hat Security Advisory: xorg-x11-server security update
An update for xorg-x11-server is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Co...
Red Hat Security Advisory: tigervnc security update
An update for tigervnc is now available for Red Hat Enterprise Linux 9.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vul...
Red Hat Security Advisory: tigervnc security update
An update for tigervnc is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vul...
Red Hat Security Advisory: tigervnc security update
An update for tigervnc is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A...
Red Hat Security Advisory: tigervnc security update
An update for tigervnc is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, and Red Hat Enterpris...
Red Hat Security Advisory: tigervnc security update
An update for tigervnc is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vu...
Red Hat Security Advisory: tigervnc security update
An update for tigervnc is now available for Red Hat Enterprise Linux 8.8 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vul...
Red Hat Security Advisory: tigervnc security update
An update for tigervnc is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vul...
Red Hat Security Advisory: tigervnc security update
An update for tigervnc is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...
Red Hat Security Advisory: tigervnc security update
An update for tigervnc is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System...

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Important

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Xorg: xwayland: buffer overflow in xkbvmodmasktext()

AFFECTED PACKAGES:
Unknown / Unknown
254 versions affected

> HISTORIQUE DES MODIFICATIONS

Première apparition
25/02/2025 16:15
Source: NVD
📊 ENRICHISSEMENT 18/10/2025 15:01
CVEPROJECT
Champ modifié: CVE Project
Ancienne valeur:
Non
Nouvelle valeur:
Oui
📊 ENRICHISSEMENT 18/10/2025 12:24
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Important", "severity_scale": null }
📊 ENRICHISSEMENT 18/10/2025 12:24
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 3 Dernière mise à jour: 1 year ago
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