# CVE-2026-90780

## Summary

- **CVE ID:** CVE-2026-90780
- **Severity:** HIGH
- **CVSS Score:** 8.7 (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)
- **CWE:** CWE-120
- **Published:** Sep 13, 2026
- **Last Modified:** Sep 13, 2026

## 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.

## Affected Products

- SIPp — sipp (0)

## References

- [CNA](https://github.com/SIPp/sipp/pull/881)
- [CNA](https://github.com/SIPp/sipp/commit/8ddfb43359703e665041a955543e07f504f80232)
- [CNA](https://github.com/SIPp/sipp/blob/v3.7.7/src/sip_parser.cpp#L164-L227)
- [CNA](https://github.com/SIPp/sipp)
- [CNA](https://www.vulncheck.com/advisories/sipp-through-3.7.7-buffer-overflow-via-oversized-sip-header-content)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.63%
- **EPSS Percentile:** 48.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._