7.7

CVE-2026-20483: mediatek, inc. mediatek chipset Missing Authorization

CVSS: 7.7v3.1HighAnalyzed
Published 03-08-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-20483 is a high (CVSS 7.7) Missing Authorization vulnerability in mediatek, inc. mediatek chipset. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 6.2% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.7/10
010
High · v3.1 (CVE.org)
EPSS score
0.17%
0%100%
Low · +0.05 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 03-08-2026
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

+0.05 pp

From 0.13% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.17%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Mediatek35 products
Mediatek, inc.1 product
  • mediatek chipsetMT6739 | MT6761 | MT6765 | MT6768 | MT6781 | MT6789 | MT6833 | MT6835 | MT6853 | MT6855 | MT6877 | MT6878 | MT6879 | MT6883 | MT6885 | MT6886 | MT6889 | MT6893 | MT6895 | MT6897 | MT6983 | MT6985 | MT6989 | MT6991 | MT6993 | MT8766 | MT8766R | MT8768 | MT8775 | MT8781 | MT8792 | MT8796 | MT8873 | MT8883 | MT8893

2 vendors · 36 products

References

1 links