CVE-2026-57159
PJSIP is a free and open source multimedia communication library written in C. Prior to commit 673b978, a remote out-of-bounds read and write can occur in the SDP negotiator when the remote payload-type map maintenance feature is enabled. assign_pt_and_update_map() in pjmedia/src/pjmedia/sdp_neg.c uses payload-type numbers taken from a remote SDP offer or answer to index fixed-size internal tables without sufficient bounds validation, so a crafted remote SDP can cause memory access outside those tables. The practical impact is memory corruption and denial of service; code execution is not demonstrated. This path is only reached when PJMEDIA_SDP_NEG_MAINTAIN_REMOTE_PT_MAP is enabled. The default is disabled, so default builds are not affected; the feature is an interoperability option that integrating products may enable. This issue has been patched via commit 673b978.
- Score
- 8.4 high
- Published
- 2026-09-04
- Links
- NVD · cve.org · Report wrong data
Matched ports (1)
| Port | Package | Version | Status | Maintainer |
|---|---|---|---|---|
| net/pjsip | pjsip | 2.14.1 | unaddressed | oliver.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 673b978, a remote out-of-bounds read and
write can occur in the SDP negotiator when the remote payload-type map
maintenance feature is enabled. assign_pt_and_update_map() in
pjmedia/src/pjmedia/sdp_neg.c uses payload-type numbers taken from a
remote SDP offer or answer to index fixed-size internal tables without
sufficient bounds validation, so a crafted remote SDP can cause memory
access outside those tables. The practical impact is memory corruption
and denial of service; code execution is not demonstrated. This path
is only reached when PJMEDIA_SDP_NEG_MAINTAIN_REMOTE_PT_MAP is
enabled. The default is disabled, so default builds are not affected;
the feature is an interoperability option that integrating products
may enable. This issue has been patched via commit 673b978.</p>
</body>
</description>
<references>
<cvename>CVE-2026-57159</cvename>
<url>https://nvd.nist.gov/vuln/detail/CVE-2026-57159</url>
</references>
<dates>
<discovery>2026-09-04</discovery>
<entry>2026-10-27</entry>
</dates>
</vuln>