CVE-2026-90778
SIPp through 3.7.7 Buffer Overflow via SIP To Header Tag
- 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 get_peer_tag() function when processing SIP To headers with tag parameters of 2049 bytes or more. Unauthenticated remote attackers can send crafted SIP messages with oversized tag parameters 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 #879patchissue-tracking
- Patch Commitpatch
- Unbounded copy in get_peer_tag() at v3.7.7technical-description
- https://github.com/SIPp/sippproduct
- VulnCheck Advisory: SIPp through 3.7.7 Buffer Overflow via SIP To Header Tagthird-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.