CVE-2025-20191CWE-805

Multiple Cisco Products Denial of Service Vulnerability

High · published May 7, 2025

CVSS v3.1
7.4
EPSS
0%
Percentile
14.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.4 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00244 · 14.7th percentile
Weakness
CWE-805 · Buffer Access with Incorrect Length Value
Published
2025-05-07T17:18Z
EPSS history
Timeline
  • 07 MAY 17:18Z
    Multiple Cisco Products Denial of Service Vulnerability
    cvelistv5