CVE-2026-57165

    Dashboard / Vulnerabilities / CVE-2026-57165

    CVE-2026-57165

    Published: 4 Sept 2026Last Modified: 13 Sept 2026

    Summary: PJSIP: Pre-authentication overflow in the telnet CLI history

    Details: 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.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57165.json, https://github.com/pjsip/pjproject/security/advisories/GHSA-rpq9-9fx7-95xw, https://nvd.nist.gov/vuln/detail/CVE-2026-57165, https://github.com/pjsip/pjproject/commit/628b71638465bacf66e767959e6acbab822eccd6

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -628b71638465bacf66e767959e6acbab822eccd6

    Affected versions

    2.17

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-57165 | CVE-DB