CVE-2025-62408

MEDIUM5.9EPSS 0.02%

c-ares - security update

Published: 12/8/2025Modified: 4/28/2026

Description

c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum attempts when using read_answer() and process_answer(), which can cause a Denial of Service. This issue is fixed in version 1.34.6.

Affected packages (3)

Alpine/c-aresfrom 0, < 1.34.6-r0
Debian/c-aresfrom 0, < 1.34.5-1+deb13u1
Debian/c-aresfrom 0, < 1.34.5-1+deb13u1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References (2)

ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2025-62408
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2025-62408