CVE-2026-20308
Cisco IOS XE Software Web-Based Management Interface Vulnerability
Description
A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an authenticated, remote attacker with low privileges to perform a denial of service (DoS) attack against an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted input to the web-based management interface of an affected device. A successful exploit could allow the attacker to cause the web-based management interface to become unresponsive.
Weakness: CWE-269
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco IOS XE Software | Routing & Switching | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco IOS XE Software
Vendor advisory
Cisco IOS XE Software Web-Based Management Interface Denial of Service Vulnerability
Cisco’s rating: Medium (advisory CVSS 4.3) · Published Aug 5, 2026
Bug ID: CSCwu19075
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from