SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-20529

In battery, there is a possible out of bounds write due to a missing bounds check.

MEDIUM 6.7EPSS 0.11%

Does this matter?

Lower severity and a low EPSS score (0.11%). Track it; it rarely justifies an emergency change on its own.

Description

In battery, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11276677; Issue ID: MSV-9217.

CVSS 3.1
6.7 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS
0.11% probability · 1th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-787
Affected
mediatek/mt6761 firmware · mediatek/mt6765 firmware · mediatek/mt6768 firmware · mediatek/mt6781 firmware · mediatek/mt6853 firmware · mediatek/mt6858 firmware · mediatek/mt6881 firmware · mediatek/mt6893 firmware · mediatek/mt6989 firmware · mediatek/mt6991 firmware · mediatek/mt6993 firmware · mediatek/mt8171 firmware · mediatek/mt8186 firmware · mediatek/mt8188 firmware · mediatek/mt8189 firmware · mediatek/mt8196 firmware · mediatek/mt8766 firmware · mediatek/mt8768 firmware · mediatek/mt8775 firmware · mediatek/mt8781 firmware · +8 more
Source
security@mediatek.com
EPSS trend
0%3%5%5 October 2026: 0.11%26 October 2026: 0.11%5 October 202626 October 2026

EPSS moved from 0.1% on 5 October 2026 to 0.1% on 26 October 2026.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.