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CVE details

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.

Score
6.3 medium
Published
2026-09-04
Links
NVD · cve.org · Report wrong data

Matched ports (1)

PortPackageVersionStatusMaintainer
net/pjsippjsip2.14.1unaddressedoliver.epper@gmail.com

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>pjsip</name>
	<range><lt>FIXME</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>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.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2026-57165</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2026-57165</url>
    </references>
    <dates>
      <discovery>2026-09-04</discovery>
      <entry>2026-10-26</entry>
    </dates>
  </vuln>