vulnerability
Cisco IOS: CVE-2025-20191: Multiple Cisco Products Switch Integrated Security Features DHCPv6 Denial of Service Vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:A/AC:L/Au:N/C:N/I:N/A:C) | May 7, 2025 | May 9, 2025 | May 15, 2025 |
Severity
6
CVSS
(AV:A/AC:L/Au:N/C:N/I:N/A:C)
Published
May 7, 2025
Added
May 9, 2025
Modified
May 15, 2025
Description
A vulnerability in the Switch Integrated Security Features (SISF) of Cisco IOS Software, Cisco IOS XE Software, Cisco NX-OS Software, and Cisco Wireless LAN Controller (WLC) AireOS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to the incorrect handling of DHCPv6 packets. An attacker could exploit this vulnerability by sending a crafted DHCPv6 packet to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
Solution
cisco-ios-upgrade-latest
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.