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    CVE-2026-71967

    OP-TEE OS through 4.10.0, fixed in commit 0aadfc2, contains a null pointer dereference vulnerability in the Widevine pseudo-TA open_session handler that allows Normal World clients to cause a denial of service when CFG_WIDEVINE_PTA is enabled. Attackers can open a session directly on the Widevine PTA to trigger an unconditional dereference of a NULL calling session pointer via is_user_ta_ctx(), faulting the TEE at S-EL1 and crashing the trusted execution environment.

    Published:Aug 10, 2026
    Last Modified:Aug 14, 2026
    EPS:Aug 10, 2026
    EPSS Score:0.00119
    CVSS Score:5.5

    Affected Products

    Vendor
    Op-tee
    Product
    Op-tee Os

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-42546 (CVSS 3.8) — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on …
    CVE-2026-41516 (CVSS 2.5) — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on …
    CVE-2026-41515 (CVSS 2.5) — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on …
    CVE-2026-41514 (CVSS 2.5) — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on …
    CVE-2026-41434 (CVSS 3.3) — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on …
    CVE-2026-40257 (CVSS 5.5) — OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High