CVE-2020-25657: Fedoraproject Fedora

Medium severity, CVSS 5.9. EPSS: 1.8% chance of exploitation in the next 30 days.

A flaw was found in all released versions of m2crypto, where they are vulnerable to Bleichenbacher timing attacks in the RSA decryption API via the timed processing of valid PKCS#1 v1.5 Ciphertext. The highest threat from this vulnerability is to confidentiality.

Affected products

• Fedoraproject Fedora: version 33 only
• m2crypto Project m2crypto: any version
• Red Hat Enterprise Linux: version 6.0 only; version 7.0 only
• Red Hat Virtualization: version 4.0 only

Published 2021-01-12. Last modified 2026-06-17.