Read the docs
TI-2022-21609 Aliases CVE-2022-43974

MatrixSSL 4.0.4 through 4.5.1 has an integer overflow in matrixSslDecodeTls13.

Priority MEDIUM 46CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01798 78th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:matrixssl:matrixssl:*:*:*:*:*:*:*:*4.0.0 to before 4.6.0VulnerableMatrixssl
  • cpe:2.3:a:matrixssl:matrixssl:*:*:*:*:*:*:*:* Versions 4.0.0 to before 4.6.0 Vulnerable ·Matrixssl

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-43974

References

Advisory 3

  • TI-2022-22985 An issue in MatrixSSL 4.5.1-open and earlier leads to failure to securely check the… CVSS 3.1HIGH 7.5
  • TI-2016-05915 Heap-based buffer overflow in MatrixSSL before 3.8.6 allows remote attackers to execute… CVSS 3.0CRITICAL 9.8
  • TI-2019-10761 In MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network… CVSS 3.1CRITICAL 9.8
  • TI-2017-02003 Out-of-bounds write in Inside Secure MatrixSSL CVSS 3.1CRITICAL 9.8
  • TI-2017-02002 Out-of-bounds write in Inside Secure MatrixSSL CVSS 3.1CRITICAL 9.8
  • TI-2019-10113 MatrixSSL before 4.2.1 has an out-of-bounds read during ASN.1 handling. CVSS 3.0CRITICAL 9.8
See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences