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CVE-2026-20488

Out-of-bounds read in MediaTek, Inc. MediaTek Chipset

CVSS score

4.4

EPSS probability

%0.2

Risk score

0.0

Published

2 mo ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.

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Vulnerability description

DayBreach CVE AI Research

CVE-2026-20488 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

In display, there is a possible information disclosure due to a missing bounds check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11004276; Issue ID: MSV-7757.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-20488 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1MediaTek, Inc.MediaTek chipset View
2mediatekmt6991 firmware View
3mediatekmt6991 View
4mediatekmt6993 firmware View
5mediatekmt6993 View
6mediatekmt8126 firmware View
7mediatekmt8126 View
8mediatekmt8171 firmware View
9mediatekmt8171 View
10mediatekmt8188 firmware View
11mediatekmt8188 View
12mediatekmt8189 firmware View
13mediatekmt8189 View
14mediatekmt8367 firmware View
15mediatekmt8367 View
16mediatekmt8668 firmware View
17mediatekmt8668 View
18mediatekmt8676 firmware View
19mediatekmt8676 View
20mediatekmt8678 firmware View
21mediatekmt8678 View
22mediatekmt8766 firmware View
23mediatekmt8766 View
24mediatekmt8768 firmware View
25mediatekmt8768 View
26mediatekmt8781 firmware View
27mediatekmt8781 View
28mediatekmt8786 firmware View
29mediatekmt8786 View
30mediatekmt8791t firmware View
31mediatekmt8791t View
32mediatekmt8799 firmware View
33mediatekmt8799 View
34mediatekmt8910 firmware View
35mediatekmt8910 View
Total affected vendors: 2|Products: 35

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
4.4CVSS V31MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:NNVD
4.4CVSS V3_1MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:NCVE ADP

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-20488 is associated with the following CWEs:

CWE-125: Out-of-bounds Read

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-20488 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureYerel erişim
PermissionsHigh
UserGerekmiyor

Official Sources and Advisories

https://www.mediatek.com/product-security-bulletin/August-2026vendor-advisory

CVSS Vector Radar Chart

4.4 / 10
Attack VectorLocalComplexityLowPrivilegesHighUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredHigh privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

MI
MediaTek, Inc. logo
MediaTek, Inc.
M
mediatek logo
mediatek

Weakness Type (CWE & CAPEC)

CWE-125

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