CVE-2026-53763CWE-190

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

Low · published July 6, 2026

CVSS v3.0
3.8
EPSS
0%
Percentile
8.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.0
3.8 · LOW
Vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00194 · 8.7th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2026-07-06T19:35Z
EPSS history
Timeline
  • 06 JUL 19:35Z
    OP-TEE has AES-GCM 32-bit integer overflow in length counters that breaks authentication guarantee
    cvelistv5