Vulnerability record · CVE-2019-16747 · published 30 December 2020

CVE-2019-16747: Matrixssl out-of-bounds write vulnerability

MMatrixssl · Matrixssl

In MatrixSSL before 4.2.2 Open, the DTLS server can encounter an invalid pointer free (leading to memory corruption and a daemon crash) via a crafted incoming network message, a different vulnerability than CVE-2019-14431.

7.5 CVSS 3.1 High EPSS 1.8% · top 22.3% CWE-787 · Out-of-bounds write

7.5CVSS 3.1 base score, v2 5.0

1.8%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

MMatrixssl Matrixssl

References

Link	Tags
https://github.com/matrixssl/matrixssl/blob/4-2-2-open/doc/CHANGES_v4.x.md	Release NotesThird Party Advisory
https://github.com/matrixssl/matrixssl/issues/33	ExploitThird Party Advisory
https://github.com/matrixssl/matrixssl/releases/tag/4-2-2-open	Third Party Advisory
https://github.com/matrixssl/matrixssl/blob/4-2-2-open/doc/CHANGES_v4.x.md	Release NotesThird Party Advisory
https://github.com/matrixssl/matrixssl/issues/33	ExploitThird Party Advisory
https://github.com/matrixssl/matrixssl/releases/tag/4-2-2-open	Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-43974Matrixssl integer overflow vulnerabilityMatrixSSL 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…EPSS 1.7%9 Jan 2023 9.8CVE-2019-14431Matrixssl out-of-bounds write vulnerabilityIn MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network messages leading to a heap-based buffer overflow of up to 256…EPSS 3.6%29 Jul 2019 9.8CVE-2019-13470Matrixssl out-of-bounds read vulnerabilityMatrixSSL before 4.2.1 has an out-of-bounds read during ASN.1 handling.EPSS 1.6%9 Jul 2019 9.8CVE-2019-10914Matrixssl improper certificate validation vulnerabilitypubRsaDecryptSignedElementExt in MatrixSSL 4.0.1 Open, as used in Inside Secure TLS Toolkit, has a stack-based buffer overflow during X.509 certifica…EPSS 1.4%8 Apr 2019 9.8CVE-2017-2780Matrixssl out-of-bounds write vulnerabilityAn exploitable heap buffer overflow vulnerability exists in the X509 certificate parsing functionality of InsideSecure MatrixSSL 3.8.7b. A specially …EPSS 2.3%22 Jun 2017 9.8CVE-2017-2781Matrixssl out-of-bounds write vulnerabilityAn exploitable heap buffer overflow vulnerability exists in the X509 certificate parsing functionality of InsideSecure MatrixSSL 3.8.7b. A specially …EPSS 2.3%22 Jun 2017 9.8CVE-2016-6890Matrixssl memory buffer overflow vulnerabilityHeap-based buffer overflow in MatrixSSL before 3.8.6 allows remote attackers to execute arbitrary code via a crafted Subject Alt Name in an X.509 cer…EPSS 6.4%5 Jan 2017 9.1CVE-2017-2782Matrixssl integer overflow vulnerabilityAn integer overflow vulnerability exists in the X509 certificate parsing functionality of InsideSecure MatrixSSL 3.8.7b. A specially crafted x509 cer…EPSS 1.0%22 Jun 2017

Source: NIST National Vulnerability Database (record CVE-2019-16747), CISA KEV, FIRST EPSS (scores of 2026-10-02). This page is refreshed as NVD updates the record.