CVE-2026-41434: CWE-121: Stack-based Buffer Overflow in OP-TEE optee_os
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.
AI Analysis
Technical Summary
CVE-2026-41434 is a stack-based buffer overflow vulnerability (CWE-121) in the OP-TEE optee_os Trusted Execution Environment. The flaw arises from unbounded recursion within the PKCS#11 Trusted Application, which can lead to a crash. This affects versions starting at 3.10.0 and prior to 4.11.0. The vulnerability has a CVSS v3.1 base score of 3.3, indicating low severity, with local attack vector, low complexity, requiring low privileges, no user interaction, and impacting availability only. The issue is patched in version 4.11.0. No known exploits or workarounds are reported.
Potential Impact
The vulnerability can cause a denial of service by crashing the PKCS#11 Trusted Application due to stack overflow from unbounded recursion. There is no impact on confidentiality or integrity. The attack requires local access with low privileges and does not require user interaction.
Mitigation Recommendations
Upgrade OP-TEE optee_os to version 4.11.0 or later, which contains the patch for this vulnerability. No workarounds are available. Since this is not a cloud service, remediation depends on applying the official fix.
CVE-2026-41434: CWE-121: Stack-based Buffer Overflow in OP-TEE optee_os
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 3.10.0 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.
CVSS v3.1
Score 3.3low
Affected software
pkg:github/op-tee/optee_osRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-41434 is a stack-based buffer overflow vulnerability (CWE-121) in the OP-TEE optee_os Trusted Execution Environment. The flaw arises from unbounded recursion within the PKCS#11 Trusted Application, which can lead to a crash. This affects versions starting at 3.10.0 and prior to 4.11.0. The vulnerability has a CVSS v3.1 base score of 3.3, indicating low severity, with local attack vector, low complexity, requiring low privileges, no user interaction, and impacting availability only. The issue is patched in version 4.11.0. No known exploits or workarounds are reported.
Potential Impact
The vulnerability can cause a denial of service by crashing the PKCS#11 Trusted Application due to stack overflow from unbounded recursion. There is no impact on confidentiality or integrity. The attack requires local access with low privileges and does not require user interaction.
Mitigation Recommendations
Upgrade OP-TEE optee_os to version 4.11.0 or later, which contains the patch for this vulnerability. No workarounds are available. Since this is not a cloud service, remediation depends on applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-20T15:32:33.815Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a4c199527e9c797193ab5e4
Added to database: 07/06/2026, 21:09:41 UTC
Last enriched: 07/06/2026, 21:10:00 UTC
Last updated: 07/06/2026, 22:12:30 UTC
Views: 7
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