CVE-2025-62408: c-ares has a Use After Free vulnerability when connection is cleaned up after error

Overview

Severity

Medium (CVSS 5.9)

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U

Exploit Status

Not Exploited

Patch Tuesday

2025-Dec

Released

2025-12-11

Last Updated

2026-01-08

EPSS Score

0.03% (percentile: 8.3%)

Affected Products (2)

Other

• 20735-17084
• 20802-17084

Revision History

• 2025-12-11: Information published.
• 2026-01-05: Information published.
• 2026-01-08: Information published.