What’s Vulnerable › Vulnerabilities

CVE-2020-25657

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-12 · updated 2026-06-17
• Weakness: CWE-385

Description

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: 33
• M2Crypto Project M2Crypto: all versions
• Red Hat Enterprise Linux: 6.0, 7.0
• RedHat Virtualization: 4.0

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1889823
• https://bugzilla.redhat.com/show_bug.cgi?id=1889823

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