CVE-2015-0286: OpenSSL

Medium severity, CVSS 5.0. EPSS: 19.7% chance of exploitation in the next 30 days.

The ASN1_TYPE_cmp function in crypto/asn1/a_type.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a does not properly perform boolean-type comparisons, which allows remote attackers to cause a denial of service (invalid read operation and application crash) via a crafted X.509 certificate to an endpoint that uses the certificate-verification feature.

Affected products

• OpenSSL OpenSSL: up to and including 0.9.8ze; version 1.0.0 only; version 1.0.0a only; version 1.0.0b only; version 1.0.0c only; version 1.0.0d only; …

Published 2015-03-19. Last modified 2026-06-17.