Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-fmjx-p826-6
- https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-weak-cryptogra
FAQ
What is CVE-2026-81718?
CVE-2026-81718 is a vulnerability with a CVSS score of 7.5 (HIGH). 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-passwor...
How severe is CVE-2026-81718?
CVE-2026-81718 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-81718?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.