CVE-2026-90779
High
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.
SeverityHigh
CVSS7.5
Exploit probability57. percentile0.8%
ProductSipp
PublishedSep 13, 2026
First seenSep 13, 2026
Weakness typeCWE-121CWE-121
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| SIPp sipp | v ≤ 3.7.7 | — |
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