CVE-2026-20586

In vdec, there is a possible out of bounds write due to a missing bounds check. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS11383899; Issue ID: MSV-9614.
References
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:mediatek:mt8910_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8910:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:o:mediatek:mt2718_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt2718:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:mediatek:mt6768_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6768:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:mediatek:mt6789_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6789:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:mediatek:mt6769_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6769:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:mediatek:mt6833_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6833:-:*:*:*:*:*:*:*

Configuration 7 (hide)

AND
cpe:2.3:o:mediatek:mt6855_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6855:-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND
cpe:2.3:o:mediatek:mt6877_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:*

Configuration 9 (hide)

AND
cpe:2.3:o:mediatek:mt8186_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8186:-:*:*:*:*:*:*:*

Configuration 10 (hide)

AND
cpe:2.3:o:mediatek:mt8188_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8188:-:*:*:*:*:*:*:*

Configuration 11 (hide)

AND
cpe:2.3:o:mediatek:mt8189_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8189:-:*:*:*:*:*:*:*

Configuration 12 (hide)

AND
cpe:2.3:o:mediatek:mt8195_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8195:-:*:*:*:*:*:*:*

Configuration 13 (hide)

AND
cpe:2.3:o:mediatek:mt8196_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8196:-:*:*:*:*:*:*:*

Configuration 14 (hide)

AND
cpe:2.3:o:mediatek:mt8367_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8367:-:*:*:*:*:*:*:*

Configuration 15 (hide)

AND
cpe:2.3:o:mediatek:mt8391_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8391:-:*:*:*:*:*:*:*

Configuration 16 (hide)

AND
cpe:2.3:o:mediatek:mt8395_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8395:-:*:*:*:*:*:*:*

Configuration 17 (hide)

AND
cpe:2.3:o:mediatek:mt8668_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8668:-:*:*:*:*:*:*:*

Configuration 18 (hide)

AND
cpe:2.3:o:mediatek:mt8676_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:*

Configuration 19 (hide)

AND
cpe:2.3:o:mediatek:mt8678_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:*

Configuration 20 (hide)

AND
cpe:2.3:o:mediatek:mt8696_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8696:-:*:*:*:*:*:*:*

Configuration 21 (hide)

AND
cpe:2.3:o:mediatek:mt8781_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8781:-:*:*:*:*:*:*:*

Configuration 22 (hide)

AND
cpe:2.3:o:mediatek:mt8788e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8788e:-:*:*:*:*:*:*:*

Configuration 23 (hide)

AND
cpe:2.3:o:mediatek:mt8792_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8792:-:*:*:*:*:*:*:*

Configuration 24 (hide)

AND
cpe:2.3:o:mediatek:mt8793_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:*

Configuration 25 (hide)

AND
cpe:2.3:o:mediatek:mt8799_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8799:-:*:*:*:*:*:*:*

History

08 Oct 2026, 14:24

Type Values Removed Values Added
CPE cpe:2.3:o:mediatek:mt8196_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8799:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt2718:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8678:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8793_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6789_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8186_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8781_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8196:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6768_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6855:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8367_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8788e:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6768:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8395:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8391_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8676_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6833_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8792_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8395_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8391:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8792:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8676:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6789:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8188:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8668:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6769:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8678_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt2718_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8696:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6769_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8668_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8781:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8186:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8788e_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt6833:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8367:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8189:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8799_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8188_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8696_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8910:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8189_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8910_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt8195_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6877_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:mediatek:mt8195:-:*:*:*:*:*:*:*
cpe:2.3:o:mediatek:mt6855_firmware:-:*:*:*:*:*:*:*
References () https://www.mediatek.com/product-security-bulletin/October-2026 - () https://www.mediatek.com/product-security-bulletin/October-2026 - Vendor Advisory
First Time Mediatek mt8186 Firmware
Mediatek mt8792
Mediatek mt8781
Mediatek mt2718 Firmware
Mediatek mt8195
Mediatek mt6768 Firmware
Mediatek
Mediatek mt6789
Mediatek mt8186
Mediatek mt8696 Firmware
Mediatek mt8189 Firmware
Mediatek mt8910
Mediatek mt8788e
Mediatek mt8668 Firmware
Mediatek mt8391
Mediatek mt6877
Mediatek mt8196 Firmware
Mediatek mt8391 Firmware
Mediatek mt8676 Firmware
Mediatek mt8189
Mediatek mt8696
Mediatek mt8788e Firmware
Mediatek mt8188 Firmware
Mediatek mt8793 Firmware
Mediatek mt8195 Firmware
Mediatek mt6769
Mediatek mt8188
Mediatek mt8367 Firmware
Mediatek mt8395 Firmware
Mediatek mt6768
Mediatek mt6877 Firmware
Mediatek mt8367
Mediatek mt6833 Firmware
Mediatek mt6769 Firmware
Mediatek mt2718
Mediatek mt8910 Firmware
Mediatek mt8799
Mediatek mt8678
Mediatek mt8678 Firmware
Mediatek mt8793
Mediatek mt8196
Mediatek mt6855
Mediatek mt8676
Mediatek mt8395
Mediatek mt6833
Mediatek mt6789 Firmware
Mediatek mt8799 Firmware
Mediatek mt6855 Firmware
Mediatek mt8668
Mediatek mt8792 Firmware
Mediatek mt8781 Firmware

05 Oct 2026, 11:16

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 8.8

05 Oct 2026, 02:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-10-05 02:16

Updated : 2026-10-30 03:16


NVD link : CVE-2026-20586

Mitre link : CVE-2026-20586

CVE.ORG link : CVE-2026-20586


JSON object : View

Products Affected

mediatek

  • mt6768_firmware
  • mt8186_firmware
  • mt6833_firmware
  • mt8188_firmware
  • mt8367_firmware
  • mt6877_firmware
  • mt8188
  • mt8792
  • mt8799_firmware
  • mt8910
  • mt8196_firmware
  • mt8186
  • mt6769_firmware
  • mt6789_firmware
  • mt8910_firmware
  • mt8788e_firmware
  • mt8676
  • mt6768
  • mt6789
  • mt8678_firmware
  • mt8195_firmware
  • mt8676_firmware
  • mt8788e
  • mt8391
  • mt8395
  • mt8799
  • mt8781
  • mt6769
  • mt6855
  • mt8195
  • mt8196
  • mt8668
  • mt8678
  • mt8189_firmware
  • mt8189
  • mt8367
  • mt6855_firmware
  • mt8793_firmware
  • mt8696
  • mt8395_firmware
  • mt2718
  • mt8792_firmware
  • mt8696_firmware
  • mt6877
  • mt8391_firmware
  • mt8793
  • mt6833
  • mt8781_firmware
  • mt8668_firmware
  • mt2718_firmware
CWE
CWE-787

Out-of-bounds Write