CVE-2026-20110: Medium severity Cisco IOS XE Software vulnerability
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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-20110?
CVE-2026-20110 has been assigned a high severity rating due to its potential to cause denial of service on affected devices.
How do I fix CVE-2026-20110?
To fix CVE-2026-20110, update the affected Cisco IOS XE Software to the latest version that addresses the vulnerability.
Who is affected by CVE-2026-20110?
Any organization using affected versions of Cisco IOS XE Software could be impacted by CVE-2026-20110 if the attacker gains local access.
What type of attack does CVE-2026-20110 facilitate?
CVE-2026-20110 facilitates a denial of service (DoS) attack due to incorrect privilege associations with the start maintenance command.
Is CVE-2026-20110 an unauthenticated vulnerability?
No, CVE-2026-20110 requires an authenticated local attacker to exploit the vulnerability.