PT-2025-39304 · Cisco · Cisco Ios

Published 2025-09-24 · Updated 2025-11-03 · CVE-2025-20327

Positive Technologies (AI Summary)

CVSS v3.1

7.7

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cisco IOS Software (affected versions not specified)

Description A flaw exists in the web UI of Cisco IOS Software that may allow a remote attacker with low privileges to trigger a denial of service (DoS) condition. This is caused by improper input validation. An attacker can exploit this by sending a crafted URL in an HTTP request, potentially causing the device to reload and resulting in a DoS condition.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-1287

Related Identifiers

BDU:2025-11723

CVE-2025-20327

Affected Products

Cisco Ios

References · 7

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-invalid-url-dos-Nvxszf6u · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-20327 · Security Note
• https://bdu.fstec.ru/vul/2025-11723 · Security Note
• https://twitter.com/CVEnew/status/1970996082730729694 · Twitter Post
• https://twitter.com/0dayPublishing/status/1970903567243366470 · Twitter Post
• https://t.me/CVEtracker/33266 · Telegram Post
• https://twitter.com/leftSECURE/status/1971300024782111038 · Twitter Post