CVE-2025-42959

HighCVSS 8.1/10Last modified Jun 17, 2026

Description

An unauthenticated attacker may exploit a scenario where a Hashed Message Authentication Code (HMAC) credential, extracted from a system missing specific security patches, is reused in a replay attack against a different system. Even if the target system is fully patched, successful exploitation could result in complete system compromise, affecting confidentiality, integrity, and availability.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-308

Affected software

No affected versions have been published.

Timeline

Published: Jul 8, 2025
Last modified: Jun 17, 2026
NVD status: Deferred

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