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CVE-2025-62408

nvd nist
Published: Dec 8, 2025Modified: Jun 17, 2026

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5.9
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 2.2 / Impact: 3.6
Source: security-advisories@github.com (Secondary)

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 (1)

Products: C Ares: C Ares
C Ares
1 product
C Ares
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
C Ares
From 1.32.3 to 1.34.6

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (2)

Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
PatchVendor Advisory

Timeline

No history available yet.