CVE-2025-20196

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

CVE-2025-20196 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

CVE-2025-20196 affects products from cisco, specifically: 807_industrial_integrated_services_router, 807_industrial_integrated_services_router_firmware, 809_industrial_integrated_services_router, 809_industrial_integrated_services_router_firmware, 829_industrial_integrated_services_router, 829_industrial_integrated_services_router_firmware, catalyst_9100, catalyst_9105, catalyst_9105ax, catalyst_9105axi, catalyst_9105axw, catalyst_9105i, catalyst_9105w, catalyst_9115, catalyst_9115_ap, catalyst_9115ax, catalyst_9115axe, catalyst_9115axi, catalyst_9117, catalyst_9117_ap, catalyst_9117ax, catalyst_9117axi, catalyst_9120, catalyst_9120_ap, catalyst_9120ax, catalyst_9120axe, catalyst_9120axi, catalyst_9120axp, catalyst_9124, catalyst_9124ax, catalyst_9124axd, catalyst_9124axi, catalyst_9124d, catalyst_9124e, catalyst_9124i, catalyst_9130, catalyst_9130_ap, catalyst_9130ax, catalyst_9130axe, catalyst_9130axi, catalyst_9136, catalyst_9162, catalyst_9164, catalyst_9166, catalyst_9166d1, cgr1000, cgr1000_firmware, ic3000_industrial_compute_gateway, ic3000_industrial_compute_gateway_firmware, ios_xe, ir510_wpan, ir510_wpan_firmware. Check the affected products table above for specific version ranges.

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.