VULNERABILITY INTELLIGENCE

CVE-2026-81703

CVSS score8.7 HIGH
EPSS probability0.22%
CISA KEVNot currently listed
Published2026-08-27
Last modified2026-09-01
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Description

openssl_encrypt versions before 1.4.9 fail to validate encryption status of embedded post-quantum private keys in file metadata. Attackers can craft files with unencrypted embedded PQC keys that decrypt under any password, bypassing authentication and producing attacker-chosen plaintext with false integrity verification.

Weakness classification

  • CWE-287: Improper Authentication

Primary references