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.
Published: 2025-12-08
Score: 5.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6084-1 c-ares security update
Ubuntu USN Ubuntu USN USN-7925-1 c-ares vulnerability
History

Mon, 02 Feb 2026 14:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:c-ares:c-ares:*:*:*:*:*:*:*:*

Thu, 11 Dec 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 09 Dec 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 09 Dec 2025 10:15:00 +0000

Type Values Removed Values Added
First Time appeared C-ares
C-ares c-ares
Vendors & Products C-ares
C-ares c-ares

Mon, 08 Dec 2025 22:15:00 +0000

Type Values Removed Values Added
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.
Title c-ares has a Use After Free vulnerability when connection is cleaned up after error
Weaknesses CWE-416
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-12-09T16:05:06.098Z

Reserved: 2025-10-13T16:26:12.178Z

Link: CVE-2025-62408

cve-icon Vulnrichment

Updated: 2025-12-09T14:20:06.524Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-08T22:15:52.620

Modified: 2026-02-02T14:40:44.843

Link: CVE-2025-62408

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-12-08T22:04:08Z

Links: CVE-2025-62408 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-12-09T10:04:48Z

Weaknesses