How severe is CVE-2022-43974?

CVE-2022-43974 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-43974 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-43974?

CVE-2022-43974 affects Matrixssl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-43974?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-43974 published?

CVE-2022-43974 was published on 2023-01-09 and last updated on 2026-06-17.

CVE-2022-43974

CVE-2022-43974 is a high-severity vulnerability in Matrixssl with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Matrixssl
Published: 2023-01-09
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-43974?: 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.
How severe is CVE-2022-43974?: CVE-2022-43974 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-43974 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-43974?: CVE-2022-43974 affects Matrixssl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-43974?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-43974 published?: CVE-2022-43974 was published on 2023-01-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:matrixssl:matrixssl:*:*:*:*:*:*:*:*

More vulnerabilities in Matrixssl

CVE-2019-14431 — Critical (CVSS 9.8): In MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network messages leading to a…
CVE-2019-13470 — Critical (CVSS 9.8): MatrixSSL before 4.2.1 has an out-of-bounds read during ASN.1 handling.
CVE-2019-10914 — Critical (CVSS 9.8): pubRsaDecryptSignedElementExt in MatrixSSL 4.0.1 Open, as used in Inside Secure TLS Toolkit, has a stack-based buffer…
CVE-2017-2781 — Critical (CVSS 9.8): An exploitable heap buffer overflow vulnerability exists in the X509 certificate parsing functionality of InsideSecure…
CVE-2017-2780 — Critical (CVSS 9.8): An exploitable heap buffer overflow vulnerability exists in the X509 certificate parsing functionality of InsideSecure…
CVE-2016-6890 — Critical (CVSS 9.8): Heap-based buffer overflow in MatrixSSL before 3.8.6 allows remote attackers to execute arbitrary code via a crafted…

All CVEs affecting Matrixssl →

Other CWE-190 (Integer Overflow or Wraparound) vulnerabilities

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CVE-2025-64721 — Critical (CVSS 10.0): Sandboxie is a sandbox-based isolation software for 32-bit and 64-bit Windows NT-based operating systems. In versions…
CVE-2015-5108 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2015-5097 — Critical (CVSS 10.0): Integer overflow in Adobe Reader and Acrobat 10.x before 10.1.15 and 11.x before 11.0.12, Acrobat and Acrobat Reader DC…
CVE-2013-2555 — Critical (CVSS 10.0): Integer overflow in Adobe Flash Player before 10.3.183.75 and 11.x before 11.7.700.169 on Windows and Mac OS X, before…

Browse all CWE-190 (Integer Overflow or Wraparound) vulnerabilities →