CVE-2014-2903

Severity: medium (CVSS 5.9 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-10-06 · updated 2026-06-17
Weakness: CWE-310

Description

CyaSSL does not check the key usage extension in leaf certificates, which allows remote attackers to spoof servers via a crafted server certificate not authorized for use in an SSL/TLS handshake.

Affected products

wolfSSL: through 2.9.4

References

http://secunia.com/advisories/62604
http://www.openwall.com/lists/oss-security/2014/04/18/2
http://secunia.com/advisories/62604
http://www.openwall.com/lists/oss-security/2014/04/18/2

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