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Vulnerability record · CVE-2021-43301 · published 16 February 2022

CVE-2021-43301: Teluu pjsip stack-based buffer overflow vulnerability

Teluu · Pjsip

Stack overflow in PJSUA API when calling pjsua_playlist_create. An attacker-controlled 'file_names' argument may cause a buffer overflow since it is copied to a fixed-size stack buffer without any size validation.

9.8 CVSS 3.1 Critical EPSS 2.4% · top 16.9% CWE-121 · Stack-based buffer overflowCWE-787 · Out-of-bounds write
9.8CVSS 3.1 base score, v2 7.5
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
11References
17 Jun 2026Last modified by NVD

Description

Stack overflow in PJSUA API when calling pjsua_playlist_create. An attacker-controlled 'file_names' argument may cause a buffer overflow since it is copied to a fixed-size stack buffer without any size validation.

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

Affected products

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

References

LinkTags
https://github.com/pjsip/pjproject/security/advisories/GHSA-qcvw-h34v-c7r9 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
https://www.debian.org/security/2022/dsa-5285 Third Party Advisory
https://github.com/pjsip/pjproject/security/advisories/GHSA-qcvw-h34v-c7r9 PatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/03/msg00035.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00021.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2023/08/msg00038.html
https://lists.debian.org/debian-lts-announce/2024/09/msg00030.html
https://www.debian.org/security/2022/dsa-5285 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-43301), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.