SEPTEMBER 17, 2026
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Case File

CVE-2026-74889

CRITICAL · CVSS 9.8 EPSS 0.20% 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 the use of HKDF without salt and a static info parameter in key normalization, which compromises the entropy of key derivation. This flaw allows attackers to exploit predictable key generation, significantly weakening cryptographic security and increasing the risk of multi-target attacks. Organizations using affected versions of OpenSSL should prioritize immediate updates to mitigate potential exploitation.

Public Exploit Signal

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

Detected Signals
exploit
GitHub PoC Links

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

CVE
CVE-2026-74889
Severity
CRITICAL
CVSS
9.8
EPSS
0.20%
OpenSSL

Original NVD Description

openssl_encrypt versions before 1.4.0 use HKDF with no salt and static info parameter in key normalization functions, reducing entropy extraction and determinism. Attackers can exploit predictable key derivation with identical inputs to weaken cryptographic security against multi-target attacks.

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