Vulnerability Report

CVE-2025-62408

Title: c-ares: Denial of Service in resolver library

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2025-62408.

CWE Category CWE-416

Published Date Dec 08, 2025

Modified Date Feb 02, 2026

Exploit Status Not Found

Score 5.9 CVSS v3.1

Exploit Probability (EPSS)

0.02%

Vulnerability Summary

CVE-2025-62408: 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.

Impacted Vendors

c-ares 1

daniel_stenberg 1

Reference Links

https://github.com/c-ares/c-ares/commit/714bf5675c541bd1e668a8db8e67ce012651e618 https://github.com/c-ares/c-ares/security/advisories/GHSA-jq53-42q6-pqr5

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

5.9

Attack Vector

NETWORK

Complexity

HIGH

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2025-62408 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

February 02, 2026 MODIFIED

Vulnerability data updated via NVD.

February 02, 2026 MODIFIED

Vulnerability data updated via NVD.

December 09, 2025 MODIFIED

Vulnerability data or affected products updated.

December 08, 2025 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity HIGH

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.