CVE-2014-2900

wolfSSL CyaSSL before 2.9.4 does not properly validate X.509 certificates with unknown critical extensions, which allows man-in-the-middle attackers to spoof servers via crafted X.509 certificate.

Published: 2014-04-22 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2014-2900 is rated Moderate Risk (41.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.29%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2014-2900

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-09-04 0.39% 0.29% -0.11%
2 2025-03-30 0.45% 0.39% -0.06%
3 2025-03-29 — 0.45% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2014-2900

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 4.9 [email protected]

Weakness enumeration for CVE-2014-2900

OS Trackers for CVE-2014-2900

vendor priority summary link
gentoo normal CVE-2014-2900: 1 GLSA(s) (201612-53), 1 atom(s) (net-libs/cyassl); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2014-2900

Affected software / configurations for CVE-2014-2900

Vendor Product Version Raw CPE
yassl cyassl <= 2.9.0 cpe:2.3:a:yassl:cyassl:*:*:*:*:*:*:*:*
yassl cyassl 0.2.0 cpe:2.3:a:yassl:cyassl:0.2.0:*:*:*:*:*:*:*
yassl cyassl 0.3.0 cpe:2.3:a:yassl:cyassl:0.3.0:*:*:*:*:*:*:*
yassl cyassl 0.4.0 cpe:2.3:a:yassl:cyassl:0.4.0:*:*:*:*:*:*:*
yassl cyassl 0.5.0 cpe:2.3:a:yassl:cyassl:0.5.0:*:*:*:*:*:*:*
yassl cyassl 0.5.5 cpe:2.3:a:yassl:cyassl:0.5.5:*:*:*:*:*:*:*
yassl cyassl 0.6.0 cpe:2.3:a:yassl:cyassl:0.6.0:*:*:*:*:*:*:*
yassl cyassl 0.6.2 cpe:2.3:a:yassl:cyassl:0.6.2:*:*:*:*:*:*:*
yassl cyassl 0.6.3 cpe:2.3:a:yassl:cyassl:0.6.3:*:*:*:*:*:*:*
yassl cyassl 0.8.0 cpe:2.3:a:yassl:cyassl:0.8.0:*:*:*:*:*:*:*
yassl cyassl 0.9.0 cpe:2.3:a:yassl:cyassl:0.9.0:*:*:*:*:*:*:*
yassl cyassl 0.9.6 cpe:2.3:a:yassl:cyassl:0.9.6:*:*:*:*:*:*:*
yassl cyassl 0.9.8 cpe:2.3:a:yassl:cyassl:0.9.8:*:*:*:*:*:*:*
yassl cyassl 0.9.9 cpe:2.3:a:yassl:cyassl:0.9.9:*:*:*:*:*:*:*
yassl cyassl 1.0.0 cpe:2.3:a:yassl:cyassl:1.0.0:rc1:*:*:*:*:*:*
yassl cyassl 1.0.0 cpe:2.3:a:yassl:cyassl:1.0.0:rc2:*:*:*:*:*:*
yassl cyassl 1.0.0 cpe:2.3:a:yassl:cyassl:1.0.0:rc3:*:*:*:*:*:*
yassl cyassl 1.0.2 cpe:2.3:a:yassl:cyassl:1.0.2:*:*:*:*:*:*:*
yassl cyassl 1.0.3 cpe:2.3:a:yassl:cyassl:1.0.3:*:*:*:*:*:*:*
yassl cyassl 1.0.6 cpe:2.3:a:yassl:cyassl:1.0.6:*:*:*:*:*:*:*
yassl cyassl 1.1.0 cpe:2.3:a:yassl:cyassl:1.1.0:*:*:*:*:*:*:*
yassl cyassl 1.2.0 cpe:2.3:a:yassl:cyassl:1.2.0:*:*:*:*:*:*:*
yassl cyassl 1.3.0 cpe:2.3:a:yassl:cyassl:1.3.0:*:*:*:*:*:*:*
yassl cyassl 1.4.0 cpe:2.3:a:yassl:cyassl:1.4.0:*:*:*:*:*:*:*
yassl cyassl 1.5.0 cpe:2.3:a:yassl:cyassl:1.5.0:*:*:*:*:*:*:*
yassl cyassl 1.5.4 cpe:2.3:a:yassl:cyassl:1.5.4:*:*:*:*:*:*:*
yassl cyassl 1.5.6 cpe:2.3:a:yassl:cyassl:1.5.6:*:*:*:*:*:*:*
yassl cyassl 1.6.0 cpe:2.3:a:yassl:cyassl:1.6.0:*:*:*:*:*:*:*
yassl cyassl 1.6.5 cpe:2.3:a:yassl:cyassl:1.6.5:*:*:*:*:*:*:*
yassl cyassl 1.8.0 cpe:2.3:a:yassl:cyassl:1.8.0:*:*:*:*:*:*:*
yassl cyassl 1.9.0 cpe:2.3:a:yassl:cyassl:1.9.0:*:*:*:*:*:*:*
yassl cyassl 2.0.0 cpe:2.3:a:yassl:cyassl:2.0.0:rc1:*:*:*:*:*:*
yassl cyassl 2.0.0 cpe:2.3:a:yassl:cyassl:2.0.0:rc2:*:*:*:*:*:*
yassl cyassl 2.0.0 cpe:2.3:a:yassl:cyassl:2.0.0:rc3:*:*:*:*:*:*
yassl cyassl 2.0.2 cpe:2.3:a:yassl:cyassl:2.0.2:*:*:*:*:*:*:*
yassl cyassl 2.0.6 cpe:2.3:a:yassl:cyassl:2.0.6:*:*:*:*:*:*:*
yassl cyassl 2.0.8 cpe:2.3:a:yassl:cyassl:2.0.8:*:*:*:*:*:*:*
yassl cyassl 2.2.0 cpe:2.3:a:yassl:cyassl:2.2.0:*:*:*:*:*:*:*
yassl cyassl 2.3.0 cpe:2.3:a:yassl:cyassl:2.3.0:*:*:*:*:*:*:*
yassl cyassl 2.4.0 cpe:2.3:a:yassl:cyassl:2.4.0:*:*:*:*:*:*:*
yassl cyassl 2.4.6 cpe:2.3:a:yassl:cyassl:2.4.6:*:*:*:*:*:*:*
yassl cyassl 2.5.0 cpe:2.3:a:yassl:cyassl:2.5.0:*:*:*:*:*:*:*
yassl cyassl 2.6.0 cpe:2.3:a:yassl:cyassl:2.6.0:*:*:*:*:*:*:*
yassl cyassl 2.7.0 cpe:2.3:a:yassl:cyassl:2.7.0:*:*:*:*:*:*:*
yassl cyassl 2.8.0 cpe:2.3:a:yassl:cyassl:2.8.0:*:*:*:*:*:*:*

References for CVE-2014-2900

cvelogic Threat Intelligence