CVE-2026-90780 SIPp through 3.7.7 Buffer Overflow via Oversized SIP Header Content
Unauthenticated remote attackers can crash the SIPp testing tool by sending oversized SIP headers, causing a buffer overflow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-90780?
CVE-2026-90780 is a high-severity memory corruption vulnerability in sipp, published on 13 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-120
Which versions are affected by CVE-2026-90780?
How do I fix CVE-2026-90780?
No fix has been published for CVE-2026-90780 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-90780 being exploited?
There is no known exploitation of CVE-2026-90780 in the wild and no public exploit code.
Sources
Also known as GHSA-fg45-qcjm-jcjr.