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Medium · 4.3 CVE-2026-20308 EUVD-2026-53461GHSA-64g3-r786-fjmf

Cisco IOS XE Software Web-Based Management Interface Vulnerability

Published Aug 5, 2026 · Updated Aug 5, 2026 · Assigned by cisco

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.

Affected products

VendorProductAffectedFixed
Cisco Cisco IOS XE Software 17.2.1a, 16.12.1y, 16.12.3s, 16.12.1w, 16.9.1d, 17.3.1, 16.9.4c, 17.2.1, 16.9.1b, 16.9.2s, 16.12.4, 16.12.3a, 17.1.1s, 16.11.1a, 16.11.1b, 16.9.1s, 16.9.3h, 16.9.1c, 16.10.1f, 17.2.1v, 16.9.3a, 16.12.1a, 16.12.1x, 16.10.1c, 16.12.3, 16.11.2, 16.12.2s, 16.10.1b, 16.9.6, 16.9.2, 16.10.1, 16.12.1t, 16… —

Advisories 1

References