CVE-2016-6886 json
The pstm_reverse function in MatrixSSL before 3.8.4 allows remote attackers to cause a denial of service (invalid memory read and crash) vi…
published 2017-01-13 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-7771
- cvss
- 7.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.7%
- EPSS 1.7% chance of exploitation in 30 days, percentile 77%
- public exploits
- 0
- none known
Summary
The pstm_reverse function in MatrixSSL before 3.8.4 allows remote attackers to cause a denial of service (invalid memory read and crash) via a (1) zero value or (2) the key's modulus for the secret key during RSA key exchange.
Patch / fix
Exploit prediction
1.69% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).
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-320 Key Management Errors
References
-
matrixssl.org
/blog/releases/matrixssl_3_8_4
patch, vendor-advisory
-
blog.fuzzing-project.org
/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html
third-party-advisory
-
securityfocus.com
/bid/92604
vdb-entry
Sources
- CVE List CVE-2016-6886
- NVD CVE-2016-6886
Fencer Vulns 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.