CVE-2025-62408CWE-416

CVE-2025-62408

Medium · published December 9, 2025

CVSS v3.1
5.9
EPSS
0%
Percentile
35.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00427 · 35.9th percentile
Weakness
CWE-416 · Use After Free
Published
2025-12-09T03:15Z
Affected products (1)
ProductVersionsFixed in
c-ares/c-ares≥ 1.32.3, < 1.34.61.34.6
References (2)
https://github.com/c-ares/c-ares/commit/714bf5675c541bd1e668a8db8e67ce012651e618 · [email protected]https://github.com/c-ares/c-ares/security/advisories/GHSA-jq53-42q6-pqr5 · [email protected]
EPSS history
Timeline
  • 08 DEC 22:04Z
    c-ares has a Use After Free vulnerability when connection is cleaned up after error
    cvelistv5