Skip to main content
EPSS 0.1%top 99%

CVE-2026-20485: CWE-787 Out-of-bounds Write in MediaTek, Inc. MediaTek chipset

0
Medium
VulnerabilityCVE-2026-20485cvecve-2026-20485cwe-787
Published: 08/03/2026 (08/03/2026, 02:05:49 UTC)
Source: CVE Database V5
Vendor/Project: MediaTek, Inc.
Product: 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

Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Affected software

MediaTek, Inc.

MediaTek chipset

Affected versions
=MT6993

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/10/2026, 14:39:38 UTC

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.

Pro Console: star threats, build custom feeds, automate alerts via Slack, email & webhooks.Upgrade to Pro

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

Community Reviews

0 reviews

Crowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.

Sort by
Loading community insights…

Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.

Actions

PRO

Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.

Please log in to the Console to use AI analysis features.

Need more coverage?

Upgrade to Pro Console for AI refresh and higher limits.

For incident response and remediation, OffSeq services can help resolve threats faster.

Latest Threats

Breach by OffSeqOFFSEQFRIENDS — 25% OFF

Check if your credentials are on the dark web

Instant breach scanning across billions of leaked records. Free tier available.

Scan now
OffSeq TrainingCredly Certified

Lead Pen Test Professional

Technical5-day eLearningPECB Accredited
View courses