CVE-2026-81718

HighCVSS 7.5/10Last modified Sep 23, 2026

Description

openssl_encrypt versions before 1.4.9 use under-parameterized PBKDF2-HMAC-SHA256 with only 100,000 iterations to protect PQC keyfile private keys and 10,000 iterations for dual-encryption file-password verification. Attackers who obtain keyfiles or encrypted files can brute-force wrapping passwords offline using GPU or ASIC acceleration.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-326

Affected software

No affected versions have been published.

Timeline

Published: Aug 27, 2026
Last modified: Sep 23, 2026
NVD status: Deferred

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