---
cve: "CVE-2026-90558"
severity: "CRITICAL"
cvss: 9.3
epss: "0.5%"
vendor: "irontec"
kev: false
exploited: false
published: "2026-09-12 18:16:44"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T14:47:31+02:00"
---

# CVE-2026-90558

> 9.3 CRITICAL · 🧪 PoC

## Beschreibung

sngrep through 1.8.4 contains stack buffer overflow vulnerabilities in SIP attribute formatting routines when header values exceed the 255-byte buffer limit. Attackers can craft malicious SIP packets with oversized Call-ID, X-Call-ID, or other header fields to overflow stack buffers and cause crashes or execute arbitrary code during packet parsing and rendering.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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)

- 9c370866afaf5ccb258bf03848b2d22f30cf61bd (Commit)
- 1ff74ee3ab5ff280e8ba976aa8c744dca57eb35b (Commit)

## Referenzen

- <https://github.com/irontec/sngrep/commit/1ff74ee3ab5ff280e8ba976aa8c744dca57eb35b>
- <https://github.com/irontec/sngrep>
- <https://github.com/irontec/sngrep/blob/v1.8.4/src/sip_call.c#L260>
- <https://github.com/irontec/sngrep/blob/v1.8.4/src/sip_msg.c#L150>
- <https://www.vulncheck.com/advisories/sngrep-through-1.8.4-stack-buffer-overflow-via-sip-headers>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-90558) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_