CVE-2026-41434

OP-TEE has unbounded recursion in sanitize_client_object()

3.3 Low

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 3.10.0 and prior to version 4.11.0, an unbounded recursion can crash the PKCS#11 TA. Version 4.11.0 contains a patch. No known workarounds are available.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: Low

Exploit likelihood

0.15%Unchanged since Jul 7, 2026

What each source reports

CVE List Score used 3.3

OP-TEE has unbounded recursion in sanitize_client_object()

Record: CVE-2026-41434
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-121
Updated: 2026-11-02

EUVDEUVD-2026-41893 3.3

Record: EUVD-2026-41893
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

NVD 3.3

Record: CVE-2026-41434
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-121
Updated: 2026-11-02

OSV 3.3

OP-TEE has unbounded recursion in sanitize_client_object()

Record: CVE-2026-41434
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-121
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-41434 3.3

Record: DEBIAN-CVE-2026-41434
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-41434 3.3

Record: UBUNTU-CVE-2026-41434
CVSS 3.1: 3.3 LowCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`optee-os` Debian:13	All versions, plus listed versions 4.10.0-14.10.0-24.5.0-24.7.0-14.8.0-14.9.0-1	None known
`optee-os` Ubuntu:25.10	All versions, plus listed versions 4.5.0-14.5.0-24.7.0-1	None known
`optee-os` Ubuntu:26.10	All versions, plus listed versions 4.8.0-14.10.0-14.10.0-2	None known
`optee-os` Ubuntu:26.04:LTS	All versions, plus listed versions 4.7.0-14.8.0-1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-41434 is a low vulnerability (CVSS 3.3) in Trustedfirmware Op-tee, published July 6, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.15%, the 4th percentile. No source names a fixed version.