CVE-2026-90779SIPp through 3.7.7 Stack Buffer Overflow via createAuthHeader Algorithm Parameter
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-121
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
SIPp sipp sipp:sipp (from the name) | through 3.7.7 | CNA record |
References
- https://github.com/SIPp/sipp/pull/880patch, issue-tracking
- https://github.com/SIPp/sipp/commit/1d4a5622bea34d0b5cdff333e6b5734608e30af7patch
- https://github.com/SIPp/sipp/blob/v3.7.7/src/auth.cpp#L183-L192technical-description
- https://github.com/SIPp/sippproduct
- https://www.vulncheck.com/advisories/sipp-through-3.7.7-stack-buffer-overflow-via-createauthheader-algorithm-parameterthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.