CVE-2026-20401

HIGH
2026-02-02 [email protected]
7.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:01 vuln.today
CVE Published
Feb 02, 2026 - 09:15 nvd
HIGH 7.5

Tags

Denial Of Service Nr15

Description

In Modem, there is a possible system crash due to an uncaught exception. 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: MOLY01738310; Issue ID: MSV-5933.

Analysis

Nr15 modem suffers from an uncaught exception vulnerability that allows remote attackers to trigger a denial of service by connecting a device to a malicious base station. No special privileges or user interaction are required to exploit this network-based flaw. …

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Remediation

Within 24 hours: Inventory all devices and assets using affected modem firmware and assess exposure in your organization. Within 7 days: Implement network monitoring to detect rogue base station activity; brief security and operations teams on the threat. …

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Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +38
POC: 0

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CVE-2026-20401 vulnerability details – vuln.today
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