CVE-2026-90780
Medium
Elevated severity or exploit probability.
CVSS base
7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS — probability of exploitation (30 days)
0.9%
56.6th percentile
CISA KEV
Not listed
Weakness / dates
CWE-120
Published 2026-09-13 · modified 2026-09-23
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.
References
- https://github.com/SIPp/sipp
- https://github.com/SIPp/sipp/blob/v3.7.7/src/sip_parser.cpp#L164-L227
- https://github.com/SIPp/sipp/commit/8ddfb43359703e665041a955543e07f504f80232
- https://github.com/SIPp/sipp/pull/881
- https://www.vulncheck.com/advisories/sipp-through-3.7.7-buffer-overflow-via-oversized-sip-header-content