CVE-2026-90779CWE-121

CVE-2026-90779

High · published September 13, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
56.2
In the wild
Unconfirmed
What it is

SIPp through 3.7.7 contains a stack buffer overflow vulnerability in createAuthHeader() when processing SIP authentication challenges with oversized algorithm parameters. A malicious SIP server can send a crafted 401 or 407 challenge to corrupt the stack and crash the client process.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00802 · 56.2th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-09-13T16:17Z
References (5)
https://github.com/SIPp/sipp · [email protected]https://github.com/SIPp/sipp/blob/v3.7.7/src/auth.cpp#L183-L192 · [email protected]https://github.com/SIPp/sipp/commit/1d4a5622bea34d0b5cdff333e6b5734608e30af7 · [email protected]https://github.com/SIPp/sipp/pull/880 · [email protected]https://www.vulncheck.com/advisories/sipp-through-3.7.7-stack-buffer-overflow-via-createauthheader-algorithm-parameter · [email protected]
EPSS history
Timeline
  • 15 SEP 03:22Z
    EPSS moved — → 1%
    epss
  • 13 SEP 11:42Z
    SIPp through 3.7.7 Stack Buffer Overflow via createAuthHeader Algorithm Parameter
    cvelistv5