5.3

CVE-2026-20461: mediatek, inc. mediatek chipset Out-of-bounds Write

CVSS: 5.3v3.1MediumDeferred
Published 01-07-2026Last modified 01-07-2026
Open JSON

Vulnerability summary

CVE-2026-20461 is a medium (CVSS 5.3) Out-of-bounds Write vulnerability in mediatek, inc. mediatek chipset. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 19.6% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.28%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-07-2026
    PublishedVulnerability first disclosed.
  2. 01-07-2026
    Last modifiedVulnerability information updated.

Description

In Modem, there is a possible out of bounds write due to a missing bounds check. This could lead to remote denial of service, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY01267281 / MOLY01318201; Issue ID: MSV-6486.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.28%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

0.00 pp

From 0.28% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.28%

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

Mediatek, inc.1 product
  • mediatek chipsetMT2737 | MT6813 | MT6835 | MT6858 | MT6878 | MT6879 | MT6886 | MT6895 | MT6896 | MT6897 | MT6899 | MT6980 | MT6983 | MT6985 | MT6988 | MT6989 | MT6990 | MT6991 | MT6993 | MT8673 | MT8676 | MT8678 | MT8755 | MT8775 | MT8792 | MT8793 | MT8795T | MT8796 | MT8798 | MT8863 | MT8873 | MT8883 | MT8893

1 vendor · 1 product

References

1 links