HIGHCVSS v3.1 7.8Vulnerability

CVE-2026-109903

A buffer overread caused by casting a negative integer to CARD32 in XvQueryImageAttributes in X.Org X Server before 21.1.26 and xwayland before 24.1.15 could be used to causes crashes by authenticated X clients.

Properties

Severity
HIGH
Nvd fetched at
2026-11-14T00:40:25.638091+00:00
Epss score
0.00184
Cvss severity
HIGH
Cvss score
7.8
Retrieved at
2026-11-14T00:51:06+00:00
Last source
FIRST EPSS
Score
7.8
Cvss version
3.1
Cve id
CVE-2026-109903
Cvss vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
First seen by Signal
2026-11-13T17:31:47+00:00
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published at
2026-11-13T11:17:14.167
Last modified
2026-11-13T11:17:15.377
Epss percentile
0.08034

Related Entities (1)

HAS_WEAKNESS (1)

Related research

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CVE-2026-109903 (CVSS v3.1 7.8) — Ninja Signal Threat Intelligence | Ninja Signal