CVE-2023-20685 | BDVDB-2026-199408 Detail

MediaTekMT6789, MT6855, MT6879, MT6895, MT6983, MT8673, MT8781, MT8795T, MT8798, MT8891

Description#

In vdec, there is a possible use after free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07608575; Issue ID: ALPS07608575.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.

Weaknesses#

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

References#

https://corp.mediatek.com/product-security-bulletin/April-2023

Exploit#

No public exploit known

History#

Version 12023-04-06Record published in the CVE List.
Version 22025-02-12Most recent update recorded in the CVE List.

Published

Published: 2023-04-06
Last modified: 2025-02-12

Vendor information

Vendor: MediaTek
Product: MT6789, MT6855, MT6879, MT6895, MT6983, MT8673, MT8781, MT8795T, MT8798, MT8891

All MediaTek vulnerabilities

Score

6.4 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 0.0.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Race Condition

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
Android 12.0, 13.0
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

6.4 Medium

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

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

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).