CVE-2025-20327

High

Description

A vulnerability in the web UI of Cisco IOS Software could allow an authenticated, remote attacker with low privileges to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper input validation. An attacker could exploit this vulnerability by sending a crafted URL in an HTTP request. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.

SeverityHigh
CVSS7.7
Exploit probability—
ProductCisco Ios
PublishedSep 24, 2025
First seenSep 24, 2025
Weakness typeCWE-1287CWE-1287

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
cisco ios15.2\(6\)e2, 15.2\(6\)e2a, 15.2\(6\)e2b, 15.2\(6\)e3, 15.2\(7\)e, 15.2\(7\)e0a, 15.2\(7\)e0b, 15.2\(7\)e0s, 15.2\(7\)e1, 15.2\(7\)e1a, 15.2\(7\)e2, 15.2\(7\)e2a, 15.2\(7\)e3, 15.2\(7\)e3k, 15.2\(7\)e4, 15.2\(7\)e5, 15.2\(7\)e6, 15.2\(7\)e7, 15.2\(7\)e8, 15.2\(7\)e9, 15.2\(7\)e10, 15.2\(7a\)e0b, 15.2\(7b\)e0b, 15.2\(8\)e, 15.2\(8\)e1, 15.2\(8\)e2, 15.2\(8\)e3, 15.2\(8\)e4, 15.2\(8\)e5—

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CVE-2025-20327 · Cisco Ios · Dark Radar