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CVE-2026-20481: mediatek, inc. mediatek chipset Out-of-bounds Write

CVSS: 6.0v3.1MediumAnalyzed
Published 03-08-2026Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2026-20481 is a medium (CVSS 6.0) Out-of-bounds Write vulnerability in mediatek, inc. mediatek chipset. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.4% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.0/10
010
Medium · 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 geniezone, 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: ALPS10965373; Issue ID: MSV-6935.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.05 pp

From 0.11% 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

Mediatek14 products
Mediatek, inc.1 product
  • mediatek chipsetMT6989 | MT8755 | MT8768 | MT8771 | MT8775 | MT8781 | MT8791T | MT8792 | MT8793 | MT8796 | MT8797 | MT8798 | MT8799 | MT8910

2 vendors · 15 products

References

1 links