High severity7.5NVD Advisory· Published Sep 13, 2026

CVE-2026-90779

Description

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.

Affected products

Sipp/Sippreferences2 versions
(expand)+ 1 more
- (no CPE)
- (no CPE)range: <3.7.7

Patches

Vulnerability mechanics

References

github.com/SIPp/sipp/blob/v3.7.7/src/auth.cppnvd
github.com/SIPp/sipp/commit/1d4a5622bea34d0b5cdff333e6b5734608e30af7nvd
github.com/SIPp/sipp/pull/880nvd
www.vulncheck.com/advisories/sipp-through-3.7.7-stack-buffer-overflow-via-createauthheader-algorithm-parameternvd

News mentions

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cvss	0.488
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000