CVE-2026-20485: CWE-787 Out-of-bounds Write in MediaTek, Inc. MediaTek chipset
In HFRP, 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: ALPS11049569; Issue ID: MSV-7931.
AI Analysis
Technical Summary
This vulnerability (CWE-787) involves an out-of-bounds write in the HFRP module of MediaTek chipsets, notably the MT6993. The issue is caused by a missing bounds check, which can lead to memory corruption. Exploitation requires the attacker to have already obtained System-level privileges, and no user interaction is necessary. The vulnerability could result in local privilege escalation, potentially allowing an attacker with System privileges to gain higher privileges or execute arbitrary code. There is no information about an official patch or remediation level, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation could lead to local escalation of privilege on affected MediaTek chipsets (MT6993), potentially allowing an attacker with System privileges to gain higher privileges or execute arbitrary code. Confidentiality and integrity impacts are rated high, while availability is not affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor MediaTek advisories for updates. No specific mitigations are indicated in the available data.
CVE-2026-20485: CWE-787 Out-of-bounds Write in MediaTek, Inc. MediaTek chipset
Description
In HFRP, 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: ALPS11049569; Issue ID: MSV-7931.
CVSS v3.1
Score 6.0medium
Affected software
MediaTek, Inc.
MediaTek chipset
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-787) involves an out-of-bounds write in the HFRP module of MediaTek chipsets, notably the MT6993. The issue is caused by a missing bounds check, which can lead to memory corruption. Exploitation requires the attacker to have already obtained System-level privileges, and no user interaction is necessary. The vulnerability could result in local privilege escalation, potentially allowing an attacker with System privileges to gain higher privileges or execute arbitrary code. There is no information about an official patch or remediation level, and no known exploits are reported in the wild.
Potential Impact
Successful exploitation could lead to local escalation of privilege on affected MediaTek chipsets (MT6993), potentially allowing an attacker with System privileges to gain higher privileges or execute arbitrary code. Confidentiality and integrity impacts are rated high, while availability is not affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or remediation level is provided, users should monitor MediaTek advisories for updates. No specific mitigations are indicated in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- MediaTek
- Date Reserved
- 2025-11-03T01:30:59.022Z
- State
- PUBLISHED
Threat ID: 6a700184bf32cb7a34d5cabf
Added to database: 08/03/2026, 02:48:36 UTC
Last enriched: 08/10/2026, 14:39:38 UTC
Last updated: 09/10/2026, 19:55:42 UTC
Views: 31
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