CVE-2026-90780
SIPp through 3.7.7 Buffer Overflow via Oversized SIP Header Content
- 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 buffer overflow vulnerability in the get_header() function in src/sip_parser.cpp when processing SIP messages with header content exceeding 20,490 bytes. Unauthenticated remote attackers can send crafted SIP messages with oversized headers to overflow the static buffer and crash the 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-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Affected Products
| Product | Versions |
|---|---|
sippSIPp |
|
References
- Pull Request #881patchissue-tracking
- Patch Commitpatch
- Unbounded sprintf concatenation in get_header() at v3.7.7technical-description
- https://github.com/SIPp/sippproduct
- VulnCheck Advisory: SIPp through 3.7.7 Buffer Overflow via Oversized SIP Header Contentthird-party-advisory
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