CVE-2025-42959

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.

Scoring

Severity

HIGH

CVSS base score

8.1

CVSS vector

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

EPSS probability

0.51%

CWE

CWE-308

Published

2025-07-08

Last modified

2026-03-13

Affected products

• SAP_SE SAP NetWeaver ABAP Server and ABAP Platform
• SAP_SE SAP NetWeaver ABAP Server and ABAP Platform
• SAP_SE SAP NetWeaver ABAP Server and ABAP Platform
• SAP_SE SAP NetWeaver ABAP Server and ABAP Platform
• SAP_SE SAP NetWeaver ABAP Server and ABAP Platform
• SAP_SE SAP NetWeaver ABAP Server and ABAP Platform
• SAP_SE SAP NetWeaver ABAP Server and ABAP Platform
• SAP_SE SAP NetWeaver ABAP Server and ABAP Platform

Weakness type

• CWE-308

Related vulnerabilities

• CVE-2026-58240 — Missing Authentication check in SAP NetWeaver (Message Server)
• CVE-2026-85590 — phpMyFAQ before 4.1.8 Authentication Bypass via Two-Factor Disable
• CVE-2026-67611 — OpenEMR 8.2.0 OAuth2 Password Grant Authentication Bypass via SMART Configuration
• CVE-2026-56022 — Webmin MFA bypass
• CVE-2024-27928 — Vantage6: 2FA can be circumvented with hacked email access
• CVE-2026-45749 — Termix's TOTP two-factor authentication can be disabled or bypassed using only the account password
• CVE-2026-33550 — SOGo before 5.12.5 does not renew the OTP if a user disables/enables it, and has a too short length...
• CVE-2025-64103 — Zitadel Bypass Second Authentication Factor

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