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CVE-2026-20533

Integer overflow in MediaTek, Inc. MediaTek Chipset

CVSS score

6.7

EPSS probability

%0.1

Risk score

0.0

Published

13 d 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-2026-20533 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 escalation of privilege due to an integer overflow. 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: ALPS11296678; Issue ID: MSV-9167.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-20533 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1MediaTek, Inc.MediaTek chipset View
2mediatekmt6739 firmware View
3mediatekmt6739 View
4mediatekmt6761 firmware View
5mediatekmt6761 View
6mediatekmt6765 firmware View
7mediatekmt6765 View
8mediatekmt6768 firmware View
9mediatekmt6768 View
10mediatekmt6781 firmware View
11mediatekmt6781 View
12mediatekmt6789 firmware View
13mediatekmt6789 View
14mediatekmt6833 firmware View
15mediatekmt6833 View
16mediatekmt6835 firmware View
17mediatekmt6835 View
18mediatekmt6853 firmware View
19mediatekmt6853 View
20mediatekmt6855 firmware View
21mediatekmt6855 View
22mediatekmt6858 firmware View
23mediatekmt6858 View
24mediatekmt6877 firmware View
25mediatekmt6877 View
26mediatekmt6878 firmware View
27mediatekmt6878 View
28mediatekmt6879 firmware View
29mediatekmt6879 View
30mediatekmt6883 firmware View
31mediatekmt6883 View
32mediatekmt6885 firmware View
33mediatekmt6885 View
34mediatekmt6886 firmware View
35mediatekmt6886 View
36mediatekmt6889 firmware View
37mediatekmt6889 View
38mediatekmt6893 firmware View
39mediatekmt6893 View
40mediatekmt6895 firmware View
41mediatekmt6895 View
42mediatekmt6897 firmware View
43mediatekmt6897 View
44mediatekmt6899 firmware View
45mediatekmt6899 View
46mediatekmt6983 firmware View
47mediatekmt6983 View
48mediatekmt6985 firmware View
49mediatekmt6985 View
50mediatekmt6989 firmware View
51mediatekmt6989 View
52mediatekmt6991 firmware View
53mediatekmt6991 View
54mediatekmt6993 firmware View
55mediatekmt6993 View
56mediatekmt8171 firmware View
57mediatekmt8171 View
58mediatekmt8188 firmware View
59mediatekmt8188 View
60mediatekmt8668 firmware View
61mediatekmt8668 View
62mediatekmt8676 firmware View
63mediatekmt8676 View
64mediatekmt8678 firmware View
65mediatekmt8678 View
66mediatekmt8793 firmware View
67mediatekmt8793 View
Total affected vendors: 2|Products: 67

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
6.7CVSS V31MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HNVD
6.7CVSS V3_1MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HCVE 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-2026-20533 is associated with the following CWEs:

CWE-190: Integer Overflow or Wraparound

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-2026-20533 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/October-2026vendor-advisory

CVSS Vector Radar Chart

6.7 / 10
Attack VectorLocalComplexityLowPrivilegesHighUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

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

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-190

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