CVE-2026-53763

LOW

OP-TEE has AES-GCM 32-bit integer overflow in length counters that breaks authentication guarantee

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 3.8
EPSS 0.0015
EPSS Percentile 4.6%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-190
Status published
Products (2)
OP-TEE/optee_os >= 3.0.0, < 4.11.0
trustedfirmware/op-tee 3.0.0 - 4.10.0
Published Jul 06, 2026
Tracked Since Jul 07, 2026