What’s Vulnerable › Vulnerabilities

CVE-2022-43974

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-01-09 · updated 2026-06-17
• Weakness: CWE-190

Description

MatrixSSL 4.0.4 through 4.5.1 has an integer overflow in matrixSslDecodeTls13. A remote attacker might be able to send a crafted TLS Message to cause a buffer overflow and achieve remote code execution. This is fixed in 4.6.0.

Affected products

• Inside Secure MatrixSSL: from 4.0.0 before 4.6.0 — fixed in 4.6.0

How to fix

Upgrade to a fixed version: Inside Secure MatrixSSL 4.6.0. Check the vendor advisory for mitigations.

References

• https://github.com/matrixssl/matrixssl/blob/4-6-0-open/doc/CHANGES_v4.x.md
• https://github.com/matrixssl/matrixssl/security/advisories/GHSA-fmwc-gwc5-2g29
• https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842
• https://github.com/matrixssl/matrixssl/blob/4-6-0-open/doc/CHANGES_v4.x.md
• https://github.com/matrixssl/matrixssl/security/advisories/GHSA-fmwc-gwc5-2g29
• https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842

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