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CVE-2026-20432: mediatek, inc. mediatek chipset Out-of-bounds Write

CVSS: 8.0v3.1HighAnalyzed
Published 07-04-2026Last modified 08-04-2026
Open JSON

Vulnerability summary

CVE-2026-20432 is a high (CVSS 8.0) Out-of-bounds Write vulnerability in mediatek, inc. mediatek chipset. EPSS estimates a 0.29% chance of exploitation in the next 30 days, higher than 20.6% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.0/10
010
High · v3.1 (CVE.org)
EPSS score
0.29%
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. 07-04-2026
    PublishedVulnerability first disclosed.
  2. 08-04-2026
    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 escalation of privilege, if a UE has connected to a rogue base station controlled by the attacker, with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: MOLY01406170; Issue ID: MSV-4461.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.29%

Chance of exploitation in the next 30 days

Percentile

21%

Versus all other CVEs

30-day change

0.00 pp

From 0.29% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.29%

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

Mediatek58 products
Mediatek, inc.1 product
  • mediatek chipsetMT2735 | MT2737 | MT6779 | MT6781 | MT6783 | MT6785 | MT6789 | MT6813 | MT6815 | MT6833 | MT6835 | MT6853 | MT6855 | MT6873 | MT6875 | MT6877 | MT6878 | MT6879 | MT6880 | MT6883 | MT6885 | MT6886 | MT6889 | MT6890 | MT6891 | MT6893 | MT6895 | MT6896 | MT6897 | MT6899 | MT6980 | MT6983 | MT6985 | MT6989 | MT6990 | MT6991 | MT6993 | MT8668 | MT8673 | MT8675 | MT8676 | MT8678 | MT8755 | MT8771 | MT8775 | MT8781 | MT8789 | MT8791 | MT8791T | MT8792 | MT8793 | MT8795T | MT8797 | MT8798 | MT8863 | MT8873 | MT8883 | MT8893

2 vendors · 59 products

References

1 links