Is CVE-2026-20110 actively exploited?

No active exploitation of CVE-2026-20110 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-20110 be exploited remotely?

No. CVE-2026-20110 requires local access to exploit.

What is the CVSS score of CVE-2026-20110?

CVE-2026-20110 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2026-20110

CWE-266Published: March 25, 2026· Updated: Mar 26, 2026

6.5

CVSS v3.1

EPSS:0.02%probability of exploitation in 30 daysPercentile:3.5th

Official Description

A vulnerability in the CLI of Cisco IOS XE Software could allow an authenticated, local attacker to cause a denial of service (DoS) condition on an affected device.

This vulnerability exists because incorrect privileges are associated with the start maintenance command. An attacker could exploit this vulnerability by accessing the management CLI of the affected device as a low-privileged user and using the start maintenance command. A successful exploit could allow the attacker to put the device in maintenance mode, which shuts down interfaces, resulting in a denial of service (DoS) condition. In case of exploitation, a device administrator can connect to the CLI and use the stop maintenance command to restore operations.

NVD Source

Technical Analysis

CVE-2026-20110 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.