What’s Vulnerable › Vulnerabilities

CVE-2016-6885

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-01-13 · updated 2026-06-17
• Weakness: CWE-416

Description

The pstm_exptmod function in MatrixSSL before 3.8.4 allows remote attackers to cause a denial of service (invalid free and crash) via a base zero value for the modular exponentiation.

Affected products

• Inside Secure MatrixSSL: through 3.8.3

References

• http://www.matrixssl.org/blog/releases/matrixssl_3_8_4
• https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html
• http://www.matrixssl.org/blog/releases/matrixssl_3_8_4
• https://blog.fuzzing-project.org/51-Fun-with-Bignums-Crashing-MatrixSSL-and-more.html

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