CVE-2026-20521
In Video HAL, there is a possible escalation of privilege due to a missing bounds check. This...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2026-20521- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-121
- Updated
- 2026-11-02
EUVDEUVD-2026-92206
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.
- Record
EUVD-2026-92206- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-qpf3-2wfg-8hrm
In Video HAL, there is a possible escalation of privilege due to a missing bounds check. This...
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.
- Record
GHSA-qpf3-2wfg-8hrm- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-121
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-20521- CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-121
- Updated
- 2026-11-02
Affected products
- 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
Show 37 moreShow less
- mediatek mt6879 firmware
- mediatek mt6881 firmware
- mediatek mt6883 firmware
- mediatek mt6885 firmware
- mediatek mt6886 firmware
- mediatek mt6889 firmware
- mediatek mt6893 firmware
- mediatek mt6895 firmware
- mediatek mt6897 firmware
- mediatek mt6899 firmware
- mediatek mt6983 firmware
- mediatek mt6985 firmware
- mediatek mt6989 firmware
- mediatek mt6991 firmware
- mediatek mt6993 firmware
- mediatek mt8126 firmware
- mediatek mt8171 firmware
- mediatek mt8186 firmware
- mediatek mt8188 firmware
- mediatek mt8189 firmware
- mediatek mt8195 firmware
- mediatek mt8196 firmware
- mediatek mt8367 firmware
- mediatek mt8391 firmware
- mediatek mt8395 firmware
- mediatek mt8668 firmware
- mediatek mt8676 firmware
- mediatek mt8678 firmware
- mediatek mt8695 firmware
- mediatek mt8696 firmware
- mediatek mt8781 firmware
- mediatek mt8788e firmware
- mediatek mt8792 firmware
- mediatek mt8793 firmware
- mediatek mt8799 firmware
- mediatek mt8910 firmware
- mediatek, inc. mediatek chipset
Affected packages
| Package | Affected | Fixed |
|---|---|---|
:unknown:Android |
SoCVersion:0 up to SoCVersion:2026-11-05, plus listed versions SoCVersion |
SoCVersion:2026-11-05 |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| affected, aliases, facts, references | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-20521 is a high vulnerability (CVSS 8.4) in Mediatek Mt2718 Firmware, published October 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. Fixed in :unknown: SoCVersion:2026-11-05.