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MediaTek GPU CVE-2026-20515

| EUVDEUVD-2026-72208 MEDIUM
Use After Free (CWE-416)
2026-09-07 MediaTek GHSA-6phf-ph66-88jx
5.5
CVSS 3.1 · Vendor: MediaTek
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Severity by source

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

Description explicitly states user interaction is needed (UI:R, overriding vendor UI:N); 'system crash' outcome supports A:H rather than vendor A:N.

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

Primary rating from Vendor (MediaTek).

CVSS VectorVendor: MediaTek

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

Lifecycle Timeline

3
Analysis Generated
Sep 07, 2026 - 11:26 vuln.today
CVE Published
Sep 07, 2026 - 01:57 cve.org
MEDIUM 5.5
CVE Published
Sep 07, 2026 - 01:57 cve.org
UNKNOWN (no severity yet)

DescriptionCVE.org

In gpu, there is a possible system crash due to use after free. This could lead to local information disclosure with User execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS11122991; Issue ID: MSV-8132.

AnalysisAI

Use-after-free in the MediaTek GPU kernel driver on chipsets MT6991 and MT8799 allows a local attacker with standard user privileges to read freed kernel or GPU memory, potentially exposing sensitive data such as pointers, credentials, or cryptographic material. The same condition may cause a full system crash, consistent with the Denial of Service tag and the 'system crash' language in the description. …

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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 local code execution on the target device with at minimum standard Android user-level privileges (PR:L per vendor CVSS). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The vendor-assigned CVSS 5.5 (AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N) correctly constrains the attack surface to local access with user-level privileges, significantly limiting the population of viable attackers. … 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 Apply vendor-released patch ALPS11122991 (Issue MSV-8132), distributed through OEM/carrier firmware updates that incorporate the MediaTek September 2026 Security Bulletin (https://www.mediatek.com/product-security-bulletin/September-2026). … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-20433 HIGH
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Out-of-bounds write in MediaTek modem firmware enables remote privilege escalation when devices connect to attacker-cont

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Heap buffer overflow in the vdec (video decoder) kernel driver across 53+ MediaTek SoCs allows a local unprivileged atta

CVE-2026-20502 HIGH
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Local privilege escalation in MediaTek's vdec (video decoder) kernel driver affects more than 53 distinct chipset varian

CVE-2026-20465 HIGH
8.1 Aug 03

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

CVE-2026-20432 HIGH
8.0 Apr 07

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
7.8 Aug 03

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

CVE-2026-20455 HIGH
7.8 Jun 01

Local privilege escalation in MediaTek GenieZone (trusted execution environment) allows an attacker who has already gain

CVE-2026-20483 HIGH
7.7 Aug 03

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

CVE-2026-20479 HIGH
7.5 Aug 03

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-2026-20515 vulnerability details – vuln.today

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