What’s Vulnerable › Vulnerabilities

CVE-2026-20431

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-07 · updated 2026-07-24
• Weakness: CWE-770

Description

In Modem, there is a possible system crash due to a logic error. 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: MOLY01106496; Issue ID: MSV-4467.

Affected products

• Mediatek Mt6813 Firmware: all versions
• Mediatek Mt6815 Firmware: all versions
• Mediatek Mt6835 Firmware: all versions
• Mediatek Mt6878 Firmware: all versions
• Mediatek Mt6897 Firmware: all versions
• Mediatek Mt6899 Firmware: all versions
• Mediatek Mt6986 Firmware: all versions
• Mediatek Mt6991 Firmware: all versions
• Mediatek Mt6993 Firmware: all versions
• Mediatek Mt8668 Firmware: all versions
• Mediatek Mt8676 Firmware: all versions
• Mediatek Mt8678 Firmware: all versions
• Mediatek Mt8755 Firmware: all versions
• Mediatek Mt8775 Firmware: all versions
• Mediatek Mt8792 Firmware: all versions
• Mediatek Mt8793 Firmware: all versions
• Mediatek Mt8863 Firmware: all versions
• Mediatek Mt8873 Firmware: all versions
• Mediatek Mt8883 Firmware: all versions

References

• https://corp.mediatek.com/product-security-bulletin/April-2026

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