CVE-2026-53763

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.

CVSS v3 3.8 LOW

3.8^/10

CVSS v3 : LOW

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

Exploitability : 2.0 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/OP-TEE/optee_os/security/advisories/GHSA-fcm8-vjhf-6vqh	Vendor Advisory Patch

Configurations

Configuration 1 (hide)

cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:*

History

25 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) OP-TEE es un Entorno de Ejecución Confiable (TEE) diseñado como compañero de un kernel de Linux no seguro ejecutándose en núcleos Arm Cortex-A usando la tecnología TrustZone. A partir de la versión 3.0.0 y antes de la versión 4.11.0, los desbordamientos de enteros de 32 bits en la implementación AES-GCM del núcleo de OP-TEE causan que la etiqueta de autenticación sea calculada con valores de longitud de bits incorrectos después de procesar más de 512 megabytes de carga útil o Datos Autenticados Adicionales (AAD). La versión 4.11.0 contiene un parche. No hay soluciones alternativas conocidas disponibles.

Information

Published : 2026-07-06 20:16

Updated : 2026-10-25 20:10

NVD link : CVE-2026-53763

Mitre link : CVE-2026-53763

CVE.ORG link : CVE-2026-53763

JSON object : View

Products Affected

trustedfirmware

op-tee

CWE

CWE-190

Integer Overflow or Wraparound

{"id": "CVE-2026-53763", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53763", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-07T14:10:42.847861Z"}}], "cvssMetricV30": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "CHANGED", "version": "3.0", "baseScore": 3.8, "attackVector": "LOCAL", "baseSeverity": "LOW", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.0}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "OP-TEE", "product": "optee_os", "versions": [{"status": "affected", "version": ">= 3.0.0, < 4.11.0"}]}]}], "published": "2026-07-06T20:16:37.327", "references": [{"url": "https://github.com/OP-TEE/optee_os/security/advisories/GHSA-fcm8-vjhf-6vqh", "tags": ["Vendor Advisory", "Patch"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-190"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "OP-TEE es un Entorno de Ejecuci\u00f3n Confiable (TEE) dise\u00f1ado como compa\u00f1ero de un kernel de Linux no seguro ejecut\u00e1ndose en n\u00facleos Arm Cortex-A usando la tecnolog\u00eda TrustZone. A partir de la versi\u00f3n 3.0.0 y antes de la versi\u00f3n 4.11.0, los desbordamientos de enteros de 32 bits en la implementaci\u00f3n AES-GCM del n\u00facleo de OP-TEE causan que la etiqueta de autenticaci\u00f3n sea calculada con valores de longitud de bits incorrectos despu\u00e9s de procesar m\u00e1s de 512 megabytes de carga \u00fatil o Datos Autenticados Adicionales (AAD). La versi\u00f3n 4.11.0 contiene un parche. No hay soluciones alternativas conocidas disponibles."}], "lastModified": "2026-10-25T20:10:00.147", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "388BEF1F-1613-4750-B978-8B551997EEB6", "versionEndIncluding": "4.10.0", "versionStartIncluding": "3.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}