---
cve: "CVE-2026-53763"
severity: "LOW"
cvss: 3.8
epss: "0.2%"
vendor: "OP-TEE"
kev: false
exploited: false
published: "2026-07-06 20:16:37"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T23:12:08+02:00"
---

# CVE-2026-53763

> 3.8 LOW · 🧪 PoC

## Beschreibung

OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 3.0.0 and prior to version 4.11.0, 32-bit integer overflows in OP-TEE core's AES-GCM implementation cause the authentication tag to be computed with incorrect bit-length values after processing more than 512 megabytes of payload or Additional Authenticated Data (AAD). Version 4.11.0 contains a patch. No known workarounds are available.

## CVSS-Vektor

```
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
```

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

## Referenzen

- <https://github.com/OP-TEE/optee_os/security/advisories/GHSA-fcm8-vjhf-6vqh>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53763) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_