EUVD-2026-25229
Integer Underflow (CWE-191)
GHSA-g562-3mh5-27v6
7.8
CVSS 3.1
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CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
3
Patch released
Apr 28, 2026 - 20:30 nvd
Patch available
EUVD ID Assigned
Apr 23, 2026 - 16:00 euvd
EUVD-2026-25229
CVE Published
Apr 23, 2026 - 14:53 nvd
HIGH 7.8
DescriptionNVD
A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.
Analysis
A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. …
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External POC / Exploit Code
Leaving vuln.today
Destination URL
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