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Public proof of conceptFix available

CVE-2026-25994

A public proof of concept exists; no exploitation attested.

  • Published2026-02-11
  • WeaknessCWE-120

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, a buffer overflow vulnerability exists in PJNATH ICE Session when processing credentials with excessively long usernames.

Timeline

dates in UTC
  1. 2026-02-1121:16CVE publishedNVD
  2. 2026-05-14Exploit-DB entryExploit-DB

Versions per branch

NVD
Pjsip
BranchAffectedFixed in
2.16≤ 2.16no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • pjsip pjproject
    Affected
    • = <= 2.16no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-02-11

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • asteriskDebian:14all versions · fixed in 1:22.10.0+dfsg+~cs6.17.60671434-1
  • pjprojectUbuntu:Pro:18.04:LTSall versions · fixed in 2.7.2~dfsg-1ubuntu0.1~esm1
  • pjprojectUbuntu:Pro:16.04:LTSall versions · fixed in 2.1.0.0.ast20130823-1+deb8u1ubuntu0.1~esm1
  • pjprojectAlpine:v3.24all versions · fixed in 2.17-r0

Vendor advisories

  • CVE-2026-25994 Red Hat Product Security

    pjsip: PJSIP: heap buffer overflow in ICE with long username

Full record on NVD

Fix

Advisories and patches

Detection

read 2026-11-01 01:02 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-52561
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2026-02-12
  • CNACVSS 4.08.1known since 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • CNAweakness (CWE)CWE-120known since 2026-10-23
  • FIRST EPSSEPSS score2.0 %2026-11-08
  • PoC-in-GitHubproof of concept1known since 2026-11-01
  • Exploit-DBdetectionread 2026-11-09
  • OSVaffected packages—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
2026-02-11
Last Modified
2026-06-17
NVD status
Analyzed

Frequently asked questions

What is CVE-2026-25994?

PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, a buffer overflow vulnerability exists in PJNATH ICE Session when processing credentials with excessively long usernames.

Is CVE-2026-25994 actively exploited?

Active exploitation of CVE-2026-25994 has not been confirmed. Its EPSS score was 2.0% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-25994?

CVE-2026-25994 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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