CVE-2026-90779

EUVD-2026-77003
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/SIPp/sipp
https://github.com/SIPp/sipp/blob/v3.7.7/src/auth.cpp#L183-L192
https://github.com/SIPp/sipp/commit/1d4a5622bea34d0b5cdff333e6b5734608e30af7
https://github.com/SIPp/sipp/pull/880
https://www.vulncheck.com/advisories/sipp-through-3.7.7-stack-buffer-overflow-via-createauthheader-algorithm-parameter