CVE-2026-20521
In Video HAL, there is a possible escalation of privilege due to a missing bounds check.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.14%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Video HAL, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11375674; Issue ID: MSV-9571.
- CVSS 3.1
- 8.4 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.14% probability · 3th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-121
- Affected
- mediatek/mt8910 firmware · mediatek/mt2718 firmware · mediatek/mt6768 firmware · mediatek/mt6769 firmware · mediatek/mt6781 firmware · mediatek/mt6789 firmware · mediatek/mt6833 firmware · mediatek/mt6835 firmware · mediatek/mt6853 firmware · mediatek/mt6855 firmware · mediatek/mt6858 firmware · mediatek/mt6877 firmware · mediatek/mt6878 firmware · mediatek/mt6879 firmware · mediatek/mt6881 firmware · mediatek/mt6883 firmware · mediatek/mt6885 firmware · mediatek/mt6886 firmware · mediatek/mt6889 firmware · mediatek/mt6893 firmware · +28 more
- Source
- security@mediatek.com
EPSS moved from 0.1% on 5 October 2026 to 0.1% on 26 October 2026.
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.