CVE-2026-90779
SIPp through 3.7.7 Stack Buffer Overflow via createAuthHeader Algorithm Parameter
- State
- Published
- Severity
- 8.7 High
- Published
- Sep 13, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-121 Stack-based Buffer Overflow
Affected Products
| Product | Versions |
|---|---|
sippSIPp |
|
References
- Pull Request #880patchissue-tracking
- Patch Commitpatch
- Unbounded strncpy into algo[32] in createAuthHeader() at v3.7.7technical-description
- https://github.com/SIPp/sippproduct
- VulnCheck Advisory: SIPp through 3.7.7 Stack Buffer Overflow via createAuthHeader Algorithm Parameterthird-party-advisory
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