PT-2026-82604

CVE-2026-81703

Published

2026-08-27

Updated

2026-09-01

Description by

CVSS 4.0

8.7

High

MetricsAV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions openssl encrypt versions prior to 1.4.9

Description The software fails to validate the encryption status of embedded post-quantum cryptography (PQC) private keys within file metadata. This allows attackers to create files containing unencrypted embedded PQC keys that can be decrypted using any password. This flaw enables the bypass of authentication and the generation of attacker-chosen plaintext with false integrity verification.

Recommendations Update to version 1.4.9 or later.

Exploitability

Exploit

Fix

Impacts

Vendors

Affected products

Weakness enumeration

CWE-287: Improper Authentication

Related identifiers

CVE-2026-81703

GHSA-QQFQ-G2CV-J7V3