CVE-2023-20840

MEDIUM
6.5
CVSS Score
Published: September 4, 2023 at 02:27 AM UTC
Updated: June 17, 2026 at 05:30 AM UTC
10 products affected across 4 vendorsLinux KernelAndroidYocto

Using MT6895, MT6897, MT6983, MT8188, MT8195, MT8395 by MediaTek, Inc.?

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

In imgsys, there is a possible out of bounds read and write due to a missing valid range checking. This could lead to local escalation of privilege with System execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS07326430; Issue ID: ALPS07326430.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

mediatek-mt6895 (environment) · mediatek-mt6897 (environment) · mediatek-mt6983 (environment) · mediatek-mt8188 (environment) · mediatek-mt8195 (environment) · mediatek-mt8395 (environment)
mediatek-mt6895 (environment) · mediatek-mt6897 (environment) · mediatek-mt6983 (environment) · mediatek-mt8188 (environment) · mediatek-mt8195 (environment) · mediatek-mt8395 (environment)
mediatek-mt6895 (environment) · mediatek-mt6897 (environment) · mediatek-mt6983 (environment) · mediatek-mt8188 (environment) · mediatek-mt8195 (environment) · mediatek-mt8395 (environment)
mediatek-mt6895 (environment) · mediatek-mt6897 (environment) · mediatek-mt6983 (environment) · mediatek-mt8188 (environment) · mediatek-mt8195 (environment) · mediatek-mt8395 (environment)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMCISA-ADP
Attack Vector
LOCAL
Complexity
LOW
Privileges
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125CWE-787

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