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CVE-2026-20110

Quick assessment

Affected
Cisco Cisco IOS XE Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco IOS XE Software是美国思科（Cisco）公司的一种网络操作系统。 Cisco IOS XE Software存在安全漏洞，该漏洞源于start maintenance命令权限分配不当，可能导致拒绝服务。

CVSS 6.5 · Medium EPSS 0.09% · P0
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I. Basic Information for CVE-2026-20110

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS XE Software 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS XE Software是美国思科（Cisco）公司的一种网络操作系统。 Cisco IOS XE Software存在安全漏洞，该漏洞源于start maintenance命令权限分配不当，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco IOS XE Software 16.6.1 -

II. Public POCs for CVE-2026-20110

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III. Intelligence Information for CVE-2026-20110

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Vendor Advisories for CVE-2026-20110 (1)

Same Patch Batch · Cisco · 2026-03-25 · 13 CVEs total

CVE-2026-20084 8.6 HIGH Cisco IOS XE Software 资源管理错误漏洞
CVE-2026-20086 8.6 HIGH Cisco IOS XE Wireless Controller software 安全漏洞
CVE-2026-20012 8.6 HIGH Cisco多款产品 安全漏洞
CVE-2026-20125 7.7 HIGH Cisco IOS和Cisco IOS XE Software 安全漏洞
CVE-2026-20004 7.4 HIGH Cisco IOS XE Software 安全漏洞
CVE-2026-20083 6.5 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2026-20104 6.1 MEDIUM Cisco多款产品 安全漏洞
CVE-2026-20115 6.1 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2026-20114 5.4 MEDIUM Cisco IOS XE Software 安全漏洞
CVE-2026-20108 5.4 MEDIUM Cisco Catalyst SD-WAN Manager（Cisco SD-WAN vManage） 跨站脚本漏洞
CVE-2026-20113 5.3 MEDIUM Cisco IOS XE Software 注入漏洞
CVE-2026-20112 4.8 MEDIUM Cisco IOS XE Software 跨站脚本漏洞

IV. Related Vulnerabilities

Same product: Cisco IOS XE Software
Same vendor: Cisco
Same weakness: CWE-266

V. Comments for CVE-2026-20110

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