CVE-2026-90778
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductSipp
PublishedSep 13, 2026
First seenSep 13, 2026
Weakness typeCWE-120CWE-120
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| SIPp sipp | v ≤ 3.7.7 | — |
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