Vulnerability record · CVE-2016-8671 · published 13 January 2017

CVE-2016-8671: Matrixssl information exposure vulnerability

MMatrixssl · Matrixssl

The pstm_exptmod function in MatrixSSL 3.8.6 and earlier does not properly perform modular exponentiation, which might allow remote attackers to predict the secret key via unspecified vectors. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-6887.

5.9 CVSS 3.0 Medium EPSS 1.3% · top 29.5% CWE-200 · Information exposure

5.9CVSS 3.0 base score, v2 4.3

1.3%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

8References

17 Jun 2026Last modified by NVD

Description

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

MMatrixssl Matrixssl

References

Link	Tags
http://www.openwall.com/lists/oss-security/2016/10/15/2	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/15/8	Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/95439
https://blog.fuzzing-project.org/54-Update-on-MatrixSSL-miscalculation-CVE-2016-8671%2C-incomplete-fix-for-CVE-2016-6887
http://www.openwall.com/lists/oss-security/2016/10/15/2	Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2016/10/15/8	Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/95439
https://blog.fuzzing-project.org/54-Update-on-MatrixSSL-miscalculation-CVE-2016-8671%2C-incomplete-fix-for-CVE-2016-6887

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-8671), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.