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CVE-2026-45614— OP-TEE vulnerable to ECDH private key recovery

Quick assessment

Affected
OP-TEE optee_os
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OP-TEE Trusted OS是OP-TEE开源的一个实现 Arm TrustZone 技术的开源可信执行环境（TEE）。 OP-TEE Trusted OS 4.11.0之前版本存在安全漏洞，该漏洞源于ECDH共享密钥路径中公钥未验证是否在正确曲线上，可能导致普通世界攻击者重建私钥。

CVSS 4.7 · Medium EPSS 0.09% · P0

Affected Version Matrix 1

VendorProduct Version RangeStatus
OP-TEE optee_os < 4.11.0 affected
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I. Basic Information for CVE-2026-45614

Vulnerability Information
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Vulnerability Title
OP-TEE vulnerable to ECDH private key recovery
Source: CVE Program / CVE List V5
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. Prior to version 4.11.0, on many of the ECDH shared secret paths, the public key isn't verified to be a point on the correct curve. By passing approximately 30-40 crafted public keys to OP-TEE, the private key can be reconstructed by a normal world attacker. When calling TEE_DeriveKey the public key is provided with full X and Y values, but the (X, Y) point might not satisfy the `Y^2 == X^3 + aX + b mod P` math for the specific curve that is used. When those public keys aren't rejected, the attacker can select public keys such that each DeriveKey call will leak `d % r` where `d` is the private key and `r` comes from the relationship between the correct curve and the attacker selected curve. With enough leaked data the Chinese remainder theorem can be used to recover the full private key. Version 4.11.0 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OP-TEE Trusted OS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OP-TEE Trusted OS是OP-TEE开源的一个实现 Arm TrustZone 技术的开源可信执行环境（TEE）。 OP-TEE Trusted OS 4.11.0之前版本存在安全漏洞，该漏洞源于ECDH共享密钥路径中公钥未验证是否在正确曲线上，可能导致普通世界攻击者重建私钥。
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

Vendor Product Affected Versions CPE Subscribe
OP-TEE optee_os < 4.11.0 -

II. Public POCs for CVE-2026-45614

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III. Intelligence Information for CVE-2026-45614

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Vendor Advisories for CVE-2026-45614 (1)

Same Patch Batch · OP-TEE · 2026-06-03 · 3 CVEs total

CVE-2026-40290 7.8 HIGH OP-TEE has a Use-After-Free race in FF-A shared-memory teardown
CVE-2026-45702 4.4 MEDIUM OP-TEE has FF-A type confusion in SPMC tmem path that causes S-EL1 kernel panic

IV. Related Vulnerabilities

Same product: optee_os
Same vendor: OP-TEE
Same weakness: CWE-347

V. Comments for CVE-2026-45614

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