---
cve: "CVE-2026-90778"
severity: "HIGH"
cvss: 8.7
epss: "63%"
vendor: "Sipp"
kev: false
exploited: false
published: "2026-09-13 12:17:16"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-19T02:19:16+02:00"
---

# CVE-2026-90778

> 8.7 HIGH · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 369b3c187f0ff96f3ec9795650820e80cf17c776 (Commit)
- ddf22d1a54e0396b2e18ebaf4cf5a3fa860e5da4 (Commit)

## Referenzen

- <https://github.com/SIPp/sipp/pull/879>
- <https://github.com/SIPp/sipp/commit/ddf22d1a54e0396b2e18ebaf4cf5a3fa860e5da4>
- <https://github.com/SIPp/sipp/blob/v3.7.7/src/sip_parser.cpp#L76-L113>
- <https://github.com/SIPp/sipp>
- <https://www.vulncheck.com/advisories/sipp-through-3.7.7-buffer-overflow-via-sip-to-header-tag>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-90778) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_