CVE-2026-53763 | OP-TEE is a Trusted Execution Environment (TEE) designed as … | CVSS 3.8 LOW

Description

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.

Metadata

CVE ID: CVE-2026-53763
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-10 17:48 UTC
Published: 2026-07-06 19:35 UTC
Last updated: 2026-07-06 19:35 UTC
Primary CWE: CWE-190
CWE-190: Integer Overflow or Wraparound
Vendor / Product: OP-TEE / optee_os
Sources: cve.org · NVD

Severity & Metrics

3.8 LOW CVSS 3.0

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

Affected products (1)

Vendor	Product	Platform	Versions
OP-TEE	optee_os	—	>= 3.0.0, < 4.11.0

Weakness (CWE)

CWE	Source	Description
CWE-190	cna	CWE-190: Integer Overflow or Wraparound

CVSS scores (1)

Score	Severity	Version	Source	Vector
3.8	LOW	3.0	cna	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N

References (1)

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