Google: dev-libs/libxml2: security update to 18244.582.2

high Tenable Cloud Security Plugin ID 451121

Description

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

- A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations
can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of
service when processing crafted input. (CVE-2025-6021)

Solution

Update the dev-libs/libxml2 library and its related packages to version 18244.582.2 or later.

Plugin Details

Severity: High

ID: 451121

Version: Revision 1.2

Type: Local

Family: Google COS Security Checks

Published: 10/1/2026

Updated: 10/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.8

Percentile: 96.66

Vendor

Vendor Severity: LOW

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2025-6021

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Reference Information

CVE: CVE-2025-6021

Detections

Analytics