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CVE-2026-53763— OP-TEE has AES-GCM 32-bit integer overflow in length counters that breaks authentication guarantee

AI Predicted 6.5 Difficulty: Moderate EPSS 0.15% · P5

Possible ATT&CK Techniques 1AI

T1055 · Process Injection

Affected Version Matrix 1

VendorProductVersion RangeStatus
OP-TEEoptee_os>= 3.0.0, < 4.11.0affected
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I. Basic Information for CVE-2026-53763

Vulnerability Information
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Vulnerability Title
OP-TEE has AES-GCM 32-bit integer overflow in length counters that breaks authentication guarantee
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Vulnerability Title
OP-TEE optee_os 数字错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OP-TEE optee_os是OP-TEE的安全操作系统。 OP-TEE optee_os 3.0.0版本至4.11.0之前版本存在数字错误漏洞，该漏洞源于OP-TEE核心AES-GCM实现中32位整数溢出，导致在处理超过512MB有效载荷或额外认证数据后，认证标签使用错误的位长度值进行计算。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
OP-TEEoptee_os >= 3.0.0, < 4.11.0 -

II. Public POCs for CVE-2026-53763

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III. Intelligence Information for CVE-2026-53763

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Vendor Advisories for CVE-2026-53763 (1)

Same Patch Batch · OP-TEE · 2026-07-06 · 8 CVEs total

CVE-2026-402575.5 MEDIUMOP-TEE has SHA-3 accelerated finalize heap overflow
CVE-2026-443625.5 MEDIUMOP-TEE's subkey rollback protection can be bypassed with older subkey versions
CVE-2026-425463.8 LOWOP-TEE has missing OPTEE_MSG_ATTR_TYPE_MASK in cleanup_shm_refs() leaks mobj references
CVE-2026-414343.3 LOWOP-TEE has unbounded recursion in sanitize_client_object()
CVE-2026-415142.5 LOWOP-TEE: RSA-OAEP padding oracle in Hisilicon HPRE driver enables plaintext recovery
CVE-2026-415162.5 LOWOP-TEE: Hisilicon HPRE PKCS#1 v1.5 Decryption Padding Oracle
CVE-2026-415152.5 LOWOP-TEE: RSA-OAEP padding oracle in NXP CAAM driver enables plaintext recovery

IV. Related Vulnerabilities

Same product: optee_os
Same vendor: OP-TEE
Same weakness: CWE-190

V. Comments for CVE-2026-53763

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