---
cve: "CVE-2021-26383"
severity: "HIGH"
cvss: 7.9
epss: "17%"
vendor: "AMD"
kev: false
exploited: false
published: "2025-09-06 00:15:33"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T21:30:57+02:00"
---

# CVE-2021-26383

> 7.9 HIGH

## Beschreibung

Insufficient bounds checking in AMD TEE (Trusted Execution Environment) could allow an attacker with a compromised userspace to invoke a command with malformed arguments leading to out of bounds memory access, potentially resulting in loss of integrity or availability.

## CVSS-Vektor

```
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Hoch | good |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Keine | good |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Referenzen

- <https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4012.html>
- <https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-6018.html>
- <https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-5007.html>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-26383) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_