CVE-2014-2903 json
CyaSSL does not check the key usage extension in leaf certificates, which allows remote attackers to spoof servers via a crafted server cer…
published 2017-10-06 9 y ago modified 2026-06-17 4 mo ago also EUVD-2014-2926
- cvss
- 5.9
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 61%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- wolfssl Debian 13, Debian 12 3.4.8+dfsg-1
debian advisories DEBIAN-CVE-2014-2903
Exploit prediction
0.96% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-310 Cryptographic Issues
References
-
secunia.com
/advisories/62604
third-party-advisory, permissions-required
-
openwall.com
/lists/oss-security/2014/04/18/2
mailing-list, third-party-advisory
Sources
- CVE List CVE-2014-2903
- NVD CVE-2014-2903
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.