Detections
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Google: sys-libs/glibc: security update to 20198.0.0

critical Tenable Cloud Security Plugin ID 475503

Description

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

 - Calling the scanf family of functions with a %mc (malloc'd character match) in the GNU C Library version
 2.7 to version 2.43 with a format width specifier with an explicit width greater than 1024 could result in
 a one byte heap buffer overflow. (CVE-2026-5450)

Solution

Update the sys-libs/glibc library and its related packages to version 20198.0.0 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-138.oval.xml.tar.gz

Plugin Details

Severity: Critical

ID: 475503

Version: Revision 1.1

Type: Local

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.23

Vendor

Vendor Severity: MEDIUM

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-5450

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 2/5/2026

Reference Information

CVE: CVE-2026-5450