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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…
- 5.8MediumCVSS base score
- 0.96%Exploitation in 30 daysEPSS · top 38% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By mitre
- 4 days later
· 4 days later
Published
- 10 years later
· 10 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N |
- EPSS (exploitation in 30 days)
- 0.96% · top 38% of all CVEs (9 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.
Affected products
n/a
- affected n/a
References
7
- http://www.wolfssl.com/yaSSL/Blog/Entries/2014/4/11_wolfSSL_Security_Advisory__April_9%2C_2014.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.wolfssl.com/yaSSL/Docs-cyassl-changelog.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- GLSA-201612-53 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- [oss-security] 20140417 CVE ids for CyaSSL 2.9.4? (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 66780 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [oss-security] 20140418 Re: CVE ids for CyaSSL 2.9.4? (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 57743 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2014-2923 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2014-2900)Record last updated .