CVE-2026-40892

HIGH EPSS 33.6%
Published Apr 21, 20262mo ago · Modified Jun 17, 20262w ago
8.1 CVSS 4.0
High
Find Similar
Published Apr 21, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

Description

PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, a stack buffer overflow exists in pjsip_auth_create_digest2() in PJSIP when using pre-computed digest credentials (PJSIP_CRED_DATA_DIGEST). The function copies credential data using cred_info->data.slen as the length without an upper-bound check, which can overflow the fixed-size ha1 stack buffer (128 bytes) if data.slen exceeds the expected digest string length.

CVSS Details

Base Score
8.1
Exploitability
—
Impact
—
Vector string
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
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
33.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-121

Affected Products 1

VendorProductVersionRange
pjsippjsip* <2.17

References 2

  • github.com https://github.com/pjsip/pjproject/commit/c82123ea6f3c3652bbc9ebd5e9e658c301451687
    Patch
  • github.com https://github.com/pjsip/pjproject/security/advisories/GHSA-2wcg-w3c4-48r7
    MitigationPatchVendor Advisory

Remediation

  • github.com https://github.com/pjsip/pjproject/commit/c82123ea6f3c3652bbc9ebd5e9e658c301451687
    Patch
  • github.com https://github.com/pjsip/pjproject/security/advisories/GHSA-2wcg-w3c4-48r7
    MitigationPatchVendor Advisory