What’s Vulnerable › Vulnerabilities

CVE-2016-6891

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-01-05 · updated 2026-06-17
• Weakness: CWE-125

Description

MatrixSSL before 3.8.6 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted ASN.1 Bit Field primitive in an X.509 certificate.

Affected products

• Inside Secure MatrixSSL: through 3.8.5

References

• http://www.securityfocus.com/bid/93498
• http://www.tripwire.com/state-of-security/security-data-protection/cyber-security/flawed-matrixssl-code-highlights-need-for-better-iot-update-practices/
• https://github.com/matrixssl/matrixssl/blob/3-8-6-open/CHANGES.md
• https://www.kb.cert.org/vuls/id/396440
• http://www.securityfocus.com/bid/93498
• http://www.tripwire.com/state-of-security/security-data-protection/cyber-security/flawed-matrixssl-code-highlights-need-for-better-iot-update-practices/
• https://github.com/matrixssl/matrixssl/blob/3-8-6-open/CHANGES.md
• https://www.kb.cert.org/vuls/id/396440

Get alerted when CVE-2016-6891 or the next vulnerability affects your stack