What’s Vulnerable › Vulnerabilities
CVE-2026-53763: OP-TEE has AES-GCM 32-bit integer overflow in length counters that breaks authentication guarantee
- Severity: low (CVSS 3.8 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-06 · updated 2026-10-25
- Weakness: CWE-190
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.
Affected products
- Linaro/OP-TEE OP-TEE: from 3.0.0 through 4.10.0
References
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