CVE-2026-57165

PJSIP is a free and open source multimedia communication library written in C. Prior to commit 628b716, a stack buffer overflow exists in the PJLIB-UTIL telnet CLI front-end when redrawing the command line during history recall (handle_up_down() in cli_telnet.c). This affects only applications that enable the telnet CLI front-end (same gating as the related CLI issue). The line-redraw sequence for a recalled history entry can accumulate more data than a fixed-size stack buffer holds, which may lead to application termination. Exploitation requires access to the unauthenticated telnet CLI, which already permits arbitrary CLI commands, so the additional impact is limited. Applications that do not enable the telnet CLI front-end are not affected. This issue has been patched via commit 628b716.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/pjsip/pjproject/commit/628b71638465bacf66e767959e6acbab822eccd6	Patch
https://github.com/pjsip/pjproject/security/advisories/GHSA-rpq9-9fx7-95xw	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:teluu:pjsip:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-09-04 18:17

Updated : 2026-09-11 16:53

NVD link : CVE-2026-57165

Mitre link : CVE-2026-57165

CVE.ORG link : CVE-2026-57165

JSON object : View

Products Affected

teluu

pjsip

CWE

CWE-121

Stack-based Buffer Overflow

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