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CVE-2026-20433

HIGHCVSS 8.8/10EPSS 0.34%

Last modified

CVE-2026-20433 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

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: MOLY01088681; Issue ID: MSV-4460.

Metrics

CVSS 3.1
8.8/10

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.34%

26.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MediatekMt2735 FirmwareAll versions
MediatekMt2737 FirmwareAll versions
MediatekMt6813 FirmwareAll versions
MediatekMt6833 FirmwareAll versions
MediatekMt6833p FirmwareAll versions
MediatekMt6835 FirmwareAll versions
MediatekMt6835t FirmwareAll versions
MediatekMt6853 FirmwareAll versions
MediatekMt6853t FirmwareAll versions
MediatekMt6855 FirmwareAll versions
MediatekMt6855t FirmwareAll versions
MediatekMt6873 FirmwareAll versions
MediatekMt6875 FirmwareAll versions
MediatekMt6875t FirmwareAll versions
MediatekMt6877 FirmwareAll versions
MediatekMt6877t FirmwareAll versions
MediatekMt6877tt FirmwareAll versions
MediatekMt6878 FirmwareAll versions
MediatekMt6878m FirmwareAll versions
MediatekMt6879 FirmwareAll versions
MediatekMt6880 FirmwareAll versions
MediatekMt6883 FirmwareAll versions
MediatekMt6885 FirmwareAll versions
MediatekMt6886 FirmwareAll versions
MediatekMt6889 FirmwareAll versions
MediatekMt6890 FirmwareAll versions
MediatekMt6891 FirmwareAll versions
MediatekMt6893 FirmwareAll versions
MediatekMt6895 FirmwareAll versions
MediatekMt6895tt FirmwareAll versions
MediatekMt6896 FirmwareAll versions
MediatekMt6897 FirmwareAll versions
MediatekMt6899 FirmwareAll versions
MediatekMt6980 FirmwareAll versions
MediatekMt6980d FirmwareAll versions
MediatekMt6983 FirmwareAll versions
MediatekMt6983t FirmwareAll versions
MediatekMt6985 FirmwareAll versions
MediatekMt6985t FirmwareAll versions
MediatekMt6989 FirmwareAll versions
MediatekMt6989t FirmwareAll versions
MediatekMt6990 FirmwareAll versions
MediatekMt6991 FirmwareAll versions
MediatekMt8668 FirmwareAll versions
MediatekMt8673 FirmwareAll versions
MediatekMt8675 FirmwareAll versions
MediatekMt8676 FirmwareAll versions
MediatekMt8678 FirmwareAll versions
MediatekMt8755 FirmwareAll versions
MediatekMt8771 FirmwareAll versions

Showing 50 of 62 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-20433?
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: MOLY01088681; Issue ID: MSV-4460.
How severe is CVE-2026-20433?
CVE-2026-20433 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.
How do I fix CVE-2026-20433?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-20433?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST