SEPTEMBER 19, 2026
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Case File

CVE-2026-74877

HIGH · CVSS 8.8 EPSS 0.25% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-17 · Last synced 2026-09-16

CyberRota Analysis

AI-Generated

OpenSSL versions prior to 1.4.0 are vulnerable due to a missing ownership verification in the revoke_key method, enabling authenticated clients to revoke any other client's key by presenting a valid ML-DSA signature. This flaw allows attackers to disrupt services by invalidating keys arbitrarily, posing a significant risk to the integrity of cryptographic operations. Organizations using affected OpenSSL versions should prioritize patching to mitigate potential exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-74877
Severity
HIGH
CVSS
8.8
EPSS
0.25%
OpenSSL

Original NVD Description

openssl_encrypt versions before 1.4.0 contain a missing ownership verification vulnerability in the revoke_key method that allows authenticated clients to revoke any other client's key. Attackers can revoke arbitrary keys by providing a valid ML-DSA signature, bypassing the intended ownership restriction.

Related CVEs

Other vulnerabilities affecting the same vendor(s)