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CVE-2026-20483

Missing authorization in MediaTek, Inc. MediaTek Chipset

CVSS score

7.7

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-2026-20483 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

In Telephony, there is a possible escalation of privilege due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11087526; Issue ID: MSV-8243.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-20483 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1MediaTek, Inc.MediaTek chipset View
2mediatekmt8893 firmware View
3mediatekmt8893 View
4mediatekmt6739 firmware View
5mediatekmt6739 View
6mediatekmt6761 firmware View
7mediatekmt6761 View
8mediatekmt6765 firmware View
9mediatekmt6765 View
10mediatekmt6768 firmware View
11mediatekmt6768 View
12mediatekmt6781 firmware View
13mediatekmt6781 View
14mediatekmt6789 firmware View
15mediatekmt6789 View
16mediatekmt6833 firmware View
17mediatekmt6833 View
18mediatekmt6835 firmware View
19mediatekmt6835 View
20mediatekmt6853 firmware View
21mediatekmt6853 View
22mediatekmt6855 firmware View
23mediatekmt6855 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
44mediatekmt6983 firmware View
45mediatekmt6983 View
46mediatekmt6985 firmware View
47mediatekmt6985 View
48mediatekmt6989 firmware View
49mediatekmt6989 View
50mediatekmt6991 firmware View
51mediatekmt6991 View
52mediatekmt6993 firmware View
53mediatekmt6993 View
54mediatekmt8766 firmware View
55mediatekmt8766 View
56mediatekmt8766r firmware View
57mediatekmt8766r View
58mediatekmt8768 firmware View
59mediatekmt8768 View
60mediatekmt8775 firmware View
61mediatekmt8775 View
62mediatekmt8781 firmware View
63mediatekmt8781 View
64mediatekmt8792 firmware View
65mediatekmt8792 View
66mediatekmt8796 firmware View
67mediatekmt8796 View
68mediatekmt8873 firmware View
69mediatekmt8873 View
70mediatekmt8883 firmware View
71mediatekmt8883 View
Total affected vendors: 2|Products: 71

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
7.7CVSS V31HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NNVD
7.7CVSS V3_1HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/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-2026-20483 is associated with the following CWEs:

CWE-862: Common Weakness Enumeration Entry CWE-862

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-2026-20483 weaknesses.

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

Attack Vector and Accessibility

ExposureYerel erişim
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

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

CVSS Vector Radar Chart

7.7 / 10
Attack VectorLocalComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone required
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-862

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