CVE-2026-20439

Use‑After‑Free Leading to Local Denial of Service in MediaTek img sys

Published Mar 2, 2026 CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed
Description
In imgsys, there is a possible system crash due to use after free. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10431955; Issue ID: MSV-5826.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Use‑After‑Free Leading to Local Denial of Service in MediaTek img sys
Type Values Removed Values Added
First Time appeared Google
Google android
Mediatek
Mediatek mt2718
Mediatek mt6899
Mediatek mt6991
Mediatek mt8678
Mediatek mt8793
CPEs cpe:2.3:h:mediatek:mt2718:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:*
cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:*
Vendors & Products Google
Google android
Mediatek
Mediatek mt2718
Mediatek mt6899
Mediatek mt6991
Mediatek mt8678
Mediatek mt8793
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description In imgsys, there is a possible system crash due to use after free. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10431955; Issue ID: MSV-5826.
Weaknesses CWE-416
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
MediaTek
Published
Updated
Mar 30, 2026, 1:05 PM
Reserved
Nov 3, 2025, 1:30 AM
Status
Analyzed
Published
Mar 2, 2026, 9:16 AM
Modified
Jun 17, 2026, 10:17 AM