4.4

CVE-2026-20489: mediatek, inc. mediatek chipset Out-of-bounds Read

CVSS: 4.4v3.1MediumAnalyzed
Published 03-08-2026Last modified 03-08-2026
Open JSON

Vulnerability summary

CVE-2026-20489 is a medium (CVSS 4.4) Out-of-bounds Read vulnerability in mediatek, inc. mediatek chipset. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.2% of scored vulnerabilities.

Overall risk
18/100
0100
Low · default modelHow is this calculated?
CVSS score
4.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.16%
0%100%
Low · +0.04 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. 03-08-2026
    Last modifiedVulnerability information updated.

Description

In display, there is a possible information disclosure due to an integer overflow. 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: ALPS11004274; Issue ID: MSV-7749.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

+0.04 pp

From 0.12% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.16%

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

Mediatek17 products
Mediatek, inc.1 product
  • mediatek chipsetMT6991 | MT6993 | MT8126 | MT8171 | MT8188 | MT8189 | MT8367 | MT8668 | MT8676 | MT8678 | MT8766 | MT8768 | MT8781 | MT8786 | MT8791T | MT8799 | MT8910

2 vendors · 18 products

References

1 links