CVE-2025-62408: c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum attempts…
CVE-2025-62408 · Severity: medium · CVSS 5.9 · Published 2025-12-08
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-62408 being exploited in the wild.
How severe is CVE-2025-62408?
Medium severity, with a CVSS score of 5.9, published 8 December 2025.
Which products and versions are affected?
C-Ares. The advisory does not name versions.
Is there a fix for CVE-2025-62408?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-62408?
Check whether you run C-Ares. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.