CVE-2016-6892 json
The x509FreeExtensions function in MatrixSSL before 3.8.6 allows remote attackers to cause a denial of service (free of unallocated memory)…
published 2017-01-05 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-7777
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
The x509FreeExtensions function in MatrixSSL before 3.8.6 allows remote attackers to cause a denial of service (free of unallocated memory) via a crafted X.509 certificate.
Patch / fix
Exploit prediction
1.86% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
github.com
/matrixssl/matrixssl/blob/3-8-6-open/CHANGES.md
patch, release-notes, third-party-advisory
-
kb.cert.org
/vuls/id/396440
third-party-advisory, us-government-resource
-
securityfocus.com
/bid/93498
vdb-entry, third-party-advisory
-
tripwire.com
/state-of-security/security-data-protection/cyber-security/flawed-matrixssl-code-highlights-need-for-better-io
technical-description, third-party-advisory
Sources
- CVE List CVE-2016-6892
- NVD CVE-2016-6892
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.