VulnerabilityModified

CVE-2026-20403

In Modem, there is a possible system crash due to a missing bounds check.

MEDIUM 6.5EPSS 0.23%

Does this matter?

Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.

Description

In Modem, there is a possible system crash 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: MOLY01689254 (Note: For N15 and NR16) / MOLY01689259 (Note: For NR17 and NR17R); Issue ID: MSV-4843.

CVSS 3.1: 6.5 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 0.23% probability · 13th percentile
CISA KEV: Not listed
Weakness: CWE-787
Affected: mediatek/nr15 · mediatek/nr16 · mediatek/nr17 · mediatek/nr17r
Source: security@mediatek.com

References

https://corp.mediatek.com/product-security-bulletin/February-2026Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.