CVE-2013-5606: Mozilla Network Security Services

Medium severity, CVSS 5.8. EPSS: 2.4% chance of exploitation in the next 30 days.

The CERT_VerifyCert function in lib/certhigh/certvfy.c in Mozilla Network Security Services (NSS) 3.15 before 3.15.3 provides an unexpected return value for an incompatible key-usage certificate when the CERTVerifyLog argument is valid, which might allow remote attackers to bypass intended access restrictions via a crafted certificate.

Affected products

• Mozilla Network Security Services: version 3.15 only; version 3.15.1 only; version 3.15.2 only

Published 2013-11-18. Last modified 2026-06-16.