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MediaTek Power HAL EUVDEUVD-2026-72202

| CVE-2026-20509 MEDIUM
Stack-based Buffer Overflow (CWE-121)
2026-09-07 MediaTek GHSA-h5pf-f7wr-7vj7
6.7
CVSS 3.1 · Vendor: MediaTek
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Severity by source

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

Local-only attack requiring System privilege; no complexity beyond precondition; full impact post-exploitation with no scope change.

3.1 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.0 AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/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
High
Availability
High

Lifecycle Timeline

3
Analysis Generated
Sep 07, 2026 - 11:28 vuln.today
CVE Published
Sep 07, 2026 - 01:57 cve.org
MEDIUM 6.7
CVE Published
Sep 07, 2026 - 01:57 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

In Power HAL, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11165543; Issue ID: MSV-9011.

AnalysisAI

Local privilege escalation in MediaTek's Power HAL component allows a process operating with System-level privileges to escalate further - potentially to root or kernel - via a stack-based out-of-bounds write caused by a missing bounds check. The vulnerability affects approximately 40 distinct MediaTek SoC models spanning multiple Android device generations. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires the attacker to already control a process running with Android System-level privileges (equivalent to UID=1000 or a System-signed application context) - this is not a default-user or app-sandbox permission level. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 6.7 accurately reflects the constrained threat model: exploitation is local-only and requires the attacker to already control a process running at Android System privilege - a non-trivial precondition that substantially narrows the attack surface. … 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 The primary fix is MediaTek patch ALPS11165543, distributed to OEM partners through MediaTek's standard security bulletin process for September 2026 (https://www.mediatek.com/product-security-bulletin/September-2026). … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-20465 HIGH
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Heap-based buffer overflow in the MediaTek WLAN AP driver enables an adjacent-network attacker to escalate privileges wi

CVE-2026-20432 HIGH
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Out-of-bounds write in MediaTek modem chipset implementations allows remote privilege escalation when user equipment con

CVE-2026-20452 HIGH
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Heap buffer overflow in the MediaTek WLAN access point driver allows adjacent-network attackers with low-privilege user

CVE-2026-20495 HIGH
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Local privilege escalation in MediaTek's Bluetooth driver affects six Wi-Fi/Bluetooth combo chipsets (MT7902, MT7920, MT

CVE-2026-20455 HIGH
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Local privilege escalation in MediaTek GenieZone (trusted execution environment) allows an attacker who has already gain

CVE-2026-20483 HIGH
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Privilege escalation in MediaTek's Android Telephony component enables any locally-installed application - regardless of

CVE-2026-20479 HIGH
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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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EUVD-2026-72202 vulnerability details – vuln.today

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