---
cve: "CVE-2026-63033"
severity: "MEDIUM"
cvss: 6.9
epss: "26%"
vendor: "MZ Automation"
kev: false
exploited: false
published: "2026-07-30 23:16:51"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-09T00:02:28+02:00"
---

# CVE-2026-63033

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

A crafted IEC 60870-5-104 I-frame with a declared object count exceeding
 what fits in the ASDU body causes InformationObject_ParseObjectAddress 
to read one byte past the end of the heap-allocated message buffer.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/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 |

## Referenzen

- <https://github.com/mz-automation/lib60870/security/advisories/GHSA-7v97-jmwv-w5j7>
- <https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-11>
- <https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-11.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-63033) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_