Vulnerability record · CVE-2026-42225 · published 7 May 2026

CVE-2026-42225: Teluu pjsip improper certificate validation vulnerability

Teluu · Pjsip

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.

8.2 CVSS 4.0 High EPSS 0.27% · top 83.0% CWE-295 · Improper certificate validation

8.2CVSS 4.0 base score

0.27%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

3References

17 Jun 2026Last modified by NVD

Description

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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Pjsip Teluu

References

Link	Tags
https://github.com/pjsip/pjproject/commit/ef684252bb62b0716675b6e99ad7fe4c90e28920	Patch
https://github.com/pjsip/pjproject/releases/tag/2.17	ProductRelease Notes
https://github.com/pjsip/pjproject/security/advisories/GHSA-x2fv-6j6c-pxmx	PatchVendor Advisory

Track CVE-2026-42225 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-38703Teluu pjsip use after free vulnerabilityPJSIP is a free and open source multimedia communication library written in C with high level API in C, C++, Java, C#, and Python languages. SRTP is …EPSS 1.3%6 Oct 2023 9.8CVE-2022-23537Teluu pjsip heap-based buffer overflow vulnerabilityPJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, S…EPSS 1.0%20 Dec 2022 9.8CVE-2022-31031Teluu pjsip classic buffer overflow vulnerabilityPJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, S…EPSS 2.0%9 Jun 2022 9.8CVE-2022-24754Teluu pjsip classic buffer overflow vulnerabilityPJSIP is a free and open source multimedia communication library written in C language. In versions prior to and including 2.12 PJSIP there is a stac…EPSS 2.1%11 Mar 2022 9.8CVE-2022-23608Teluu pjsip use after free vulnerabilityPJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, S…EPSS 4.0%22 Feb 2022 9.8CVE-2021-43299Teluu pjsip stack-based buffer overflow vulnerabilityStack overflow in PJSUA API when calling pjsua_player_create. An attacker-controlled 'filename' argument may cause a buffer overflow since it is copi…EPSS 2.5%16 Feb 2022 9.8CVE-2021-43300Teluu pjsip stack-based buffer overflow vulnerabilityStack overflow in PJSUA API when calling pjsua_recorder_create. An attacker-controlled 'filename' argument may cause a buffer overflow since it is co…EPSS 2.4%16 Feb 2022 9.8CVE-2021-43301Teluu pjsip stack-based buffer overflow vulnerabilityStack overflow in PJSUA API when calling pjsua_playlist_create. An attacker-controlled 'file_names' argument may cause a buffer overflow since it is …EPSS 2.4%16 Feb 2022

Source: NIST National Vulnerability Database (record CVE-2026-42225), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.