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Vulnerability record · CVE-2025-20196 · published 7 May 2025

CVE-2025-20196: Cisco ios xe improper restriction of authentication attempts vulnerability

Cisco · Ios Xe

A vulnerability in the Cisco IOx application hosting environment of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the Cisco IOx application hosting environment to stop responding, resulting in a denial of service (DoS) condition. This vulnerability is due to the improper handling of HTTP requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to cause the Cisco IOx application hosting environment to stop responding. The IOx process will need to be manually restarted to recover services.

5.3 CVSS 3.1 Medium EPSS 0.40% · top 68.4% CWE-307 · Improper restriction of authentication attempts
5.3CVSS 3.1 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the Cisco IOx application hosting environment of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the Cisco IOx application hosting environment to stop responding, resulting in a denial of service (DoS) condition. This vulnerability is due to the improper handling of HTTP requests. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to cause the Cisco IOx application hosting environment to stop responding. The IOx process will need to be manually restarted to recover services.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-dos-95Fqnf7b Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2023-20076Cisco ic3000 industrial compute gateway os command injection vulnerabilityA vulnerability in the Cisco IOx application hosting environment could allow an authenticated, remote attacker to execute arbitrary commands as root …EPSS 1.5%7.5CVE-2021-1460Cisco ios uncontrolled resource consumption vulnerabilityA vulnerability in the Cisco IOx Application Framework of Cisco 809 Industrial Integrated Services Routers (Industrial ISRs), Cisco 829 Industrial IS…EPSS 1.3%6.5CVE-2019-12714Cisco ic3000 industrial compute gateway firmware uncontrolled resource consumption vulnerabilityA vulnerability in the web-based management interface of Cisco IC3000 Industrial Compute Gateway could allow an authenticated, remote attacker to cau…EPSS 1.5%

Source: NIST National Vulnerability Database (record CVE-2025-20196), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.