CVE-2026-42225

Name: CVE-2026-42225
Creator: NVD / NIST
Published: 2026-05-07T20:16:43.96+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.2/10EPSS 0.16%

Last modified Jun 17, 2026

CVE-2026-42225 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, on GnuTLS builds, the SIP TLS transport (sip_transport_tls) can accept connections with invalid or untrusted certificates even when the application explicitly enables certificate verification via verify_server = PJ_TRUE or verify_client = PJ_TRUE. EPSS estimates a 0.16% chance of exploitation in the next 30 days.

Description

PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, on GnuTLS builds, the SIP TLS transport (sip_transport_tls) can accept connections with invalid or untrusted certificates even when the application explicitly enables certificate verification via verify_server = PJ_TRUE or verify_client = PJ_TRUE. This issue has been patched in version 2.17.

Metrics

CVSS 3.1

5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS 4.0

8.2/10

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/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

EPSS Probability

0.16%

5.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Teluu	Pjsip	< 2.17

References

https://github.com/pjsip/pjproject/commit/ef684252bb62b0716675b6e99ad7fe4c90e28920Patch
https://github.com/pjsip/pjproject/releases/tag/2.17Product, Release Notes
https://github.com/pjsip/pjproject/security/advisories/GHSA-x2fv-6j6c-pxmxPatch, Vendor Advisory

Timeline

Published: May 7, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-42225?

How severe is CVE-2026-42225?

CVE-2026-42225 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.

How do I fix CVE-2026-42225?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-42225?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST