CVE-2026-20519 Modem - Privilege Escalation

Modem contains an out of bounds write caused by missing bounds check, letting remote attackers escalate privileges if UE connects to a rogue base station, exploit requires no additional privileges or user interaction.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.23% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Privilege Escalation
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
5 October 2026
Updated
15 October 2026
Weakness
CWE-787

Vendor fix

Apply patch MOLY01778993 or update to the latest version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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