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MediaTek GeniZone CVE-2026-20518

| EUVDEUVD-2026-72210 MEDIUM
Out-of-bounds Read (CWE-125)
2026-09-07 MediaTek GHSA-vh6w-xprq-6w4p
4.4
CVSS 3.1 · Vendor: MediaTek
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Severity by source

Vendor (MediaTek) PRIMARY
4.4 MEDIUM
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
vuln.today AI
4.2 MEDIUM

UI:R aligns with description ('user interaction is needed'); all other metrics match vendor-provided vector: local, high-privilege, confidentiality-only.

3.1 AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
4.0 AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (MediaTek).

CVSS VectorVendor: MediaTek

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Metadata Corrected
Sep 07, 2026 - 11:40 vuln.today
tag: Buffer Overflow removed
Analysis Generated
Sep 07, 2026 - 11:26 vuln.today
CVE Published
Sep 07, 2026 - 01:57 cve.org
MEDIUM 4.4
CVE Published
Sep 07, 2026 - 01:57 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

In geniezone, there is a possible information disclosure due to a missing bounds check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is needed for exploitation. Patch ID: ALPS10867524 / ALPS10876355; Issue ID: MSV-6674.

AnalysisAI

Local information disclosure in MediaTek's GeniZone trusted execution environment component allows a System-privileged attacker to read out-of-bounds memory due to a missing bounds check (CWE-125), potentially leaking confidential data from the TEE. The flaw affects seventeen MediaTek chipsets documented in the September 2026 security bulletin, and patches are available under IDs ALPS10867524 and ALPS10876355. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Delivery
technique details hidden
Exploit
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Execution
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Persist
technique details hidden
Impact
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Vulnerability AssessmentAI

Exploitation Three concrete prerequisites must all be met: (1) the target device contains one of the 17 affected MediaTek chipsets (MT8771, MT8799, MT8791T, MT8910, MT8781, MT8893, MT8792, MT6991, MT8798, MT8775, MT8793, MT8797, MT8883, MT8873, MT8796, MT8755, MT8768); (2) the attacker has already achieved System-level (UID=1000 or equivalent root/system) privilege on the device - this is the binding constraint and requires a prior privilege-escalation chain; (3) the device is running firmware not yet incorporating patches ALPS10867524/ALPS10876355. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.4 score (AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N) correctly captures the high privilege bar: the attacker must already hold System-level access, which in the Android threat model represents near-full device compromise. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Patch available per MediaTek advisory (Patch IDs: ALPS10867524 / ALPS10876355), referenced in the September 2026 MediaTek Product Security Bulletin at https://www.mediatek.com/product-security-bulletin/September-2026. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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Out-of-bounds write in MediaTek modem chipset implementations allows remote privilege escalation when user equipment con

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Privilege escalation in MediaTek's Android Telephony component enables any locally-installed application - regardless of

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Out-of-bounds read in MediaTek modem firmware across 19 chipsets enables remote denial of service when a User Equipment

CVE-2026-20458 HIGH
7.5 Jul 01

Remote privilege escalation in the baseband modem firmware of dozens of MediaTek chipsets allows an attacker operating a

CVE-2026-20510 MEDIUM
6.7 Sep 07

Privilege escalation via a double-free memory corruption bug in camera middleware affects 17 MediaTek chipset variants,

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CVE-2026-20518 vulnerability details – vuln.today

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