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Cisco IOS XE Software Web-Based Management Interface Denial of Service Vulnerability

view advisory published 2026-08-05

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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

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describes (1)

Related CVEs.

IDseverity exploitable
CVE-2026-20308US——
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…
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External citations — patches, advisories, analysis.

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