CVE-2026-53763: OP-TEE has AES-GCM 32-bit integer overflow in length counters that breaks authentication guarantee
OP-TEE · optee_os
Affected: OP-TEE optee_os · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 9% of scored CVEs
DescriptionCVE.org
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 products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- OP-TEE · optee_os>= 3.0.0, < 4.11.0
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-53763 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.