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Vulnerability record · CVE-2020-6062 · published 19 February 2020

CVE-2020-6062: Coturn project coturn null pointer dereference vulnerability

Coturn Project · Coturn

An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability.

7.5 CVSS 3.1 High EPSS 6.1% · top 6.8% CWE-476 · NULL pointer dereference
7.5CVSS 3.1 base score, v2 5.0
6.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
12References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An exploitable denial-of-service vulnerability exists in the way CoTURN 4.5.1.1 web server parses POST requests. A specially crafted HTTP POST request can lead to server crash and denial of service. An attacker needs to send an HTTP request to trigger this vulnerability.

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

Affected products

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

References

LinkTags
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQZZPI34LAS3SFNW6Z2ZJ46
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OUVZRXW5ZIGWVKOLF3NPXRP
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XN2NK6FT7AMW5UIZNXDNHKE
https://talosintelligence.com/vulnerability_reports/TALOS-2020-0985 ExploitThird Party Advisory
https://usn.ubuntu.com/4415-1/ Third Party Advisory
https://www.debian.org/security/2020/dsa-4711 Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQZZPI34LAS3SFNW6Z2ZJ46
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OUVZRXW5ZIGWVKOLF3NPXRP
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XN2NK6FT7AMW5UIZNXDNHKE
https://talosintelligence.com/vulnerability_reports/TALOS-2020-0985 ExploitThird Party Advisory
https://usn.ubuntu.com/4415-1/ Third Party Advisory
https://www.debian.org/security/2020/dsa-4711 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2020-6062), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.