Detections
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Echo: xorg-server: security update to 2:21.1.16-1.3+deb13u2+e2

medium Tenable Cloud Security Plugin ID 460150

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - An out-of-bounds read flaw was found in the X.Org X server and Xwayland in
 __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of
 bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but
 requires byte-swapped clients which is disabled by default. (CVE-2026-50262)

Solution

Update the xorg-server library and its related packages to version 2:21.1.16-1.3+deb13u2+e2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-50262

Plugin Details

Severity: Medium

ID: 460150

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:N/A:N

CVSS Score Source: CVE-2026-50262

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/5/2026

Vulnerability Publication Date: 6/1/2026

Reference Information

CVE: CVE-2026-50262