How severe is CVE-2014-2900?

CVE-2014-2900 has a CVSS 2.0 base score of 5.8, rated medium severity.

Is CVE-2014-2900 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-2900?

CVE-2014-2900 primarily affects Yassl Cyassl. In total, 45 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-2900?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2014-2900 published?

CVE-2014-2900 was published on 2014-04-22 and last updated on 2026-06-17.

CVE-2014-2900

CVE-2014-2900 is a medium-severity vulnerability in Yassl Cyassl with a CVSS 2.0 base score of 5.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-310.

Key facts

Severity: Medium (CVSS 2.0 base score 5.8)
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-310
Affected product: Yassl Cyassl
Published: 2014-04-22
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2014-2900?: CVE-2014-2900 has a CVSS 2.0 base score of 5.8, rated medium severity.
Is CVE-2014-2900 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-2900?: CVE-2014-2900 primarily affects Yassl Cyassl. In total, 45 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-2900?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2014-2900 published?: CVE-2014-2900 was published on 2014-04-22 and last updated on 2026-06-17.

References

Affected products (45)

cpe:2.3:a:yassl:cyassl:*:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.2.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.4.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.5.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.5.5:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.6.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.6.2:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.6.3:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.8.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.9.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.9.6:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.9.8:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:0.9.9:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.0.6:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.2.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.3.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.5.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.5.4:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.5.6:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.6.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.6.5:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:2.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:2.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:2.0.0:rc3:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:2.0.2:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:2.0.6:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:2.0.8:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:2.3.0:*:*:*:*:*:*:*
cpe:2.3:a:yassl:cyassl:2.4.0:*:*:*:*:*:*:*

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