CVE-2026-45614
OP-TEE vulnerable to ECDH private key recovery
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.
INFO
Published Date :
June 3, 2026, 7:16 p.m.
Last Modified :
July 22, 2026, 8:10 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update OP-TEE to version 4.11.0 or later.
- Verify ECDH public key validation logic.
- Ensure curve parameters are correctly checked.
- Apply patches for older versions if available.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45614.
| URL | Resource |
|---|---|
| https://github.com/OP-TEE/optee_os/security/advisories/GHSA-g6qf-hwf7-mg9h | Exploit Patch Vendor Advisory |
| https://github.com/OP-TEE/optee_os/security/advisories/GHSA-g6qf-hwf7-mg9h | Exploit Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45614 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45614
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45614 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45614 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 22, 2026
Action Type Old Value New Value Added Translation Title: optee_os de OP-TEE, Description: 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. Antes de la versión 4.11.0, en muchas de las rutas de secreto compartido ECDH, la clave pública no se verifica para ser un punto en la curva correcta. Al pasar aproximadamente 30-40 claves públicas manipuladas a OP-TEE, la clave privada puede ser reconstruida por un atacante del mundo normal. Al llamar a TEE_DeriveKey, la clave pública se proporciona con valores X e Y completos, pero el punto (X, Y) podría no satisfacer las matemáticas 'Y^2 == X^3 + aX + b mod P' para la curva específica que se utiliza. Cuando esas claves públicas no son rechazadas, el atacante puede seleccionar claves públicas de tal manera que cada llamada a DeriveKey filtrará 'd % r' donde 'd' es la clave privada y 'r' proviene de la relación entre la curva correcta y la curva seleccionada por el atacante. Con suficientes datos filtrados, el teorema chino del resto puede usarse para recuperar la clave privada completa. La versión 4.11.0 corrige el problema. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'OP-TEE', 'product': 'optee_os', 'versions': [{'status': 'affected', 'version': '< 4.11.0'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-45614', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-03T19:29:20.663892Z'} -
Reanalysis by [email protected]
Jun. 05, 2026
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:linaro:op-tee:*:*:*:*:*:*:*:* versions up to (including) 4.10.0 OR *cpe:2.3:o:trustedfirmware:op-tee:*:*:*:*:*:*:*:* versions up to (including) 4.10.0 -
Initial Analysis by [email protected]
Jun. 05, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:o:linaro:op-tee:*:*:*:*:*:*:*:* versions up to (including) 4.10.0 Added Reference Type CISA-ADP: https://github.com/OP-TEE/optee_os/security/advisories/GHSA-g6qf-hwf7-mg9h Types: Exploit, Patch, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/OP-TEE/optee_os/security/advisories/GHSA-g6qf-hwf7-mg9h Types: Exploit, Patch, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 03, 2026
Action Type Old Value New Value Added Reference https://github.com/OP-TEE/optee_os/security/advisories/GHSA-g6qf-hwf7-mg9h -
New CVE Received by [email protected]
Jun. 03, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-347 Added Reference https://github.com/OP-TEE/optee_os/security/advisories/GHSA-g6qf-hwf7-mg9h