CVE-2026-82926

Secure-world denial of service via unchecked session lookup

Published Sep 1, 2026 · Updated Sep 1, 2026

NULL pointer dereference in Samsung Electronics mTower before afef59aa6f55c5d5ebf9b14bc020bf1c2c37489a allows local users to crash the secure world. tee_ioctl_invoke() accepts an invalid, zero, or stale session identifier, fails to check tee_ta_get_session(), and passes a NULL session to tee_ta_invoke_command() for dereference. A non-secure ARM caller must submit an otherwise-valid TEE_IOC_INVOKE request through the CMSE ioctl veneer; exploitation faults or hangs the secure world without affecting confidentiality or integrity.

CVSS severity5.5
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Samsung Electronics mTower before afef59aa6f55c5d5ebf9b14bc020bf1c2c37489a allows local users to crash the secure world. tee_ioctl_invoke() accepts an invalid, zero, or stale session identifier, fails to check tee_ta_get_session(), and passes a NULL session to tee_ta_invoke_command() for dereference. A non-secure ARM caller must submit an otherwise-valid TEE_IOC_INVOKE request through the CMSE ioctl veneer; exploitation faults or hangs the secure world without affecting confidentiality or integrity.

The record

CVE
CVE-2026-82926
Published
Sep 1, 2026
Updated
Sep 1, 2026
Vendor
Samsung Electronics Co., Ltd.
Product
mTower
Classifications
CWE-476, CAPEC-129, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <afef59aa6f55c5d5ebf9b14bc020bf1c2c37489a

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Samsung Electronics Co., Ltd. · mTowerversion=0 <afef59aa6f55c5d5ebf9b14bc020bf1c2c37489a

Published CVSS scores

5.5Samsung PSIRTCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
CAPEC-129Pointer Manipulation
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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