CVE-2026-90780

High

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductSipp

PublishedSep 13, 2026

First seenSep 13, 2026

Weakness typeCWE-120CWE-120

How to fix

Patches

github.com/SIPp/sipp/pull/881
github.com/SIPp/sipp/commit/8ddfb43359703e665041a955543e07f504f80232

Affected products

Product	Affected versions	Fixed in
SIPp sipp	v ≤ 3.7.7	—

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