CVE-2025-20191

Summary

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.

Affected Software

VendorProductVersion RangeStatus
CiscoCisco NX-OS Software8.2(5)affected
CiscoCisco NX-OS Software7.3(5)D1(1)affected
CiscoCisco NX-OS Software8.4(2)affected
CiscoCisco NX-OS Software8.4(3)affected
CiscoCisco NX-OS Software9.2(3)affected
CiscoCisco NX-OS Software9.2(2v)affected
CiscoCisco NX-OS Software7.3(4)D1(1)affected
CiscoCisco NX-OS Software8.2(1)affected
CiscoCisco NX-OS Software9.2(1)affected
CiscoCisco NX-OS Software9.2(2t)affected
CiscoCisco NX-OS Software9.2(3y)affected
CiscoCisco NX-OS Software7.0(3)I7(6z)affected
CiscoCisco NX-OS Software9.3(2)affected
CiscoCisco NX-OS Software7.0(3)I7(3z)affected
CiscoCisco NX-OS Software7.0(3)IM7(2)affected
CiscoCisco NX-OS Software7.0(3)I7(5a)affected
CiscoCisco NX-OS Software8.1(1)affected
CiscoCisco NX-OS Software8.2(2)affected
CiscoCisco NX-OS Software8.3(2)affected
CiscoCisco NX-OS Software7.3(2)D1(3a)affected
CiscoCisco NX-OS Software9.2(4)affected
CiscoCisco NX-OS Software8.1(2)affected
CiscoCisco NX-OS Software7.3(3)D1(1)affected
CiscoCisco NX-OS Software8.2(3)affected
CiscoCisco NX-OS Software7.0(3)I7(2)affected
CiscoCisco NX-OS Software7.0(3)I7(3)affected
CiscoCisco NX-OS Software8.4(1)affected
CiscoCisco NX-OS Software7.3(0)DX(1)affected
CiscoCisco NX-OS Software7.3(2)D1(1)affected
CiscoCisco NX-OS Software9.3(1)affected
CiscoCisco NX-OS Software7.0(3)I7(6)affected
CiscoCisco NX-OS Software7.3(2)D1(2)affected
CiscoCisco NX-OS Software8.2(4)affected
CiscoCisco NX-OS Software7.0(3)I7(4)affected
CiscoCisco NX-OS Software7.0(3)I7(7)affected
CiscoCisco NX-OS Software9.3(1z)affected
CiscoCisco NX-OS Software9.2(2)affected
CiscoCisco NX-OS Software8.1(2a)affected
CiscoCisco NX-OS Software7.3(2)D1(3)affected
CiscoCisco NX-OS Software7.0(3)I7(5)affected
CiscoCisco NX-OS Software7.0(3)I7(1)affected
CiscoCisco NX-OS Software7.0(3)IA7(2)affected
CiscoCisco NX-OS Software7.0(3)IA7(1)affected
CiscoCisco NX-OS Software8.3(1)affected
CiscoCisco NX-OS Software7.3(1)D1(1)affected
CiscoCisco NX-OS Software7.3(0)D1(1)affected
CiscoCisco NX-OS Software9.3(3)affected
CiscoCisco NX-OS Software7.3(2)D1(1d)affected
CiscoCisco NX-OS Software7.0(3)I7(8)affected
CiscoCisco NX-OS Software9.3(4)affected
CiscoCisco NX-OS Software7.3(6)D1(1)affected
CiscoCisco NX-OS Software8.2(6)affected
CiscoCisco NX-OS Software9.3(5)affected
CiscoCisco NX-OS Software7.0(3)I7(9)affected
CiscoCisco NX-OS Software9.3(6)affected
CiscoCisco NX-OS Software10.1(2)affected
CiscoCisco NX-OS Software10.1(1)affected
CiscoCisco NX-OS Software8.4(4)affected
CiscoCisco NX-OS Software7.3(7)D1(1)affected
CiscoCisco NX-OS Software9.3(5w)affected
CiscoCisco NX-OS Software8.2(7)affected
CiscoCisco NX-OS Software9.3(7)affected
CiscoCisco NX-OS Software9.3(7k)affected
CiscoCisco NX-OS Software7.0(3)I7(9w)affected
CiscoCisco NX-OS Software10.2(1)affected
CiscoCisco NX-OS Software7.3(8)D1(1)affected
CiscoCisco NX-OS Software9.3(7a)affected
CiscoCisco NX-OS Software8.2(7a)affected
CiscoCisco NX-OS Software9.3(8)affected
CiscoCisco NX-OS Software8.4(4a)affected
CiscoCisco NX-OS Software8.4(5)affected
CiscoCisco NX-OS Software7.0(3)I7(10)affected
CiscoCisco NX-OS Software8.2(8)affected
CiscoCisco NX-OS Software10.2(1q)affected
CiscoCisco NX-OS Software10.2(2)affected
CiscoCisco NX-OS Software9.3(9)affected
CiscoCisco NX-OS Software10.1(2t)affected
CiscoCisco NX-OS Software7.3(9)D1(1)affected
CiscoCisco NX-OS Software10.2(3)affected
CiscoCisco NX-OS Software8.4(6)affected
CiscoCisco NX-OS Software10.2(3t)affected
CiscoCisco NX-OS Software9.3(10)affected
CiscoCisco NX-OS Software10.2(2a)affected
CiscoCisco NX-OS Software8.2(9)affected
CiscoCisco NX-OS Software10.3(1)affected
CiscoCisco NX-OS Software10.2(4)affected
CiscoCisco NX-OS Software8.4(7)affected
CiscoCisco NX-OS Software10.3(2)affected
CiscoCisco NX-OS Software8.4(6a)affected
CiscoCisco NX-OS Software9.3(11)affected
CiscoCisco NX-OS Software10.3(3)affected
CiscoCisco NX-OS Software10.2(5)affected
CiscoCisco NX-OS Software8.2(10)affected
CiscoCisco NX-OS Software9.3(12)affected
CiscoCisco NX-OS Software10.2(3v)affected
CiscoCisco NX-OS Software10.4(1)affected
CiscoCisco NX-OS Software8.4(8)affected
CiscoCisco NX-OS Software10.3(99w)affected
CiscoCisco NX-OS Software10.2(6)affected
CiscoCisco NX-OS Software10.3(3w)affected
CiscoCisco NX-OS Software10.3(99x)affected
CiscoCisco NX-OS Software10.3(3o)affected
CiscoCisco NX-OS Software8.4(9)affected
CiscoCisco NX-OS Software10.3(4)affected
CiscoCisco NX-OS Software10.3(3p)affected
CiscoCisco NX-OS Software10.3(4a)affected
CiscoCisco NX-OS Software10.4(2)affected
CiscoCisco NX-OS Software10.3(3q)affected
CiscoCisco NX-OS Software9.3(13)affected
CiscoCisco NX-OS Software8.2(11)affected
CiscoCisco NX-OS Software10.3(5)affected
CiscoCisco NX-OS Software10.2(7)affected
CiscoCisco NX-OS Software10.4(3)affected
CiscoCisco NX-OS Software10.3(3x)affected
CiscoCisco NX-OS Software10.3(4g)affected
CiscoCisco NX-OS Software10.2(8)affected
CiscoCisco NX-OS Software10.3(3r)affected
CiscoCisco NX-OS Software9.3(14)affected
CiscoCisco NX-OS Software10.3(4h)affected
CiscoCisco Wireless LAN Controller (WLC)8.10.112.0affected
CiscoCisco Wireless LAN Controller (WLC)8.8.120.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.143.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.111.0affected
CiscoCisco Wireless LAN Controller (WLC)8.2.164.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.109.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.132.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.105.0affected
CiscoCisco Wireless LAN Controller (WLC)8.2.170.0affected
CiscoCisco Wireless LAN Controller (WLC)8.2.160.0affected
CiscoCisco Wireless LAN Controller (WLC)8.8.100.0affected
CiscoCisco Wireless LAN Controller (WLC)8.9.111.0affected
CiscoCisco Wireless LAN Controller (WLC)8.7.102.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.102.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.133.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.131.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.100.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.131.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.122.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.101.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.112.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.120.0affected
CiscoCisco Wireless LAN Controller (WLC)8.2.141.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.141.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.121.0affected
CiscoCisco Wireless LAN Controller (WLC)8.2.151.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.130.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.102.0affected
CiscoCisco Wireless LAN Controller (WLC)8.2.161.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.151.0affected
CiscoCisco Wireless LAN Controller (WLC)8.2.100.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.135.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.135.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.140.0affected
CiscoCisco Wireless LAN Controller (WLC)8.7.106.0affected
CiscoCisco Wireless LAN Controller (WLC)8.9.100.0affected
CiscoCisco Wireless LAN Controller (WLC)8.8.111.0affected
CiscoCisco Wireless LAN Controller (WLC)8.2.110.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.110.0affected
CiscoCisco Wireless LAN Controller (WLC)8.2.130.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.141.105affected
CiscoCisco Wireless LAN Controller (WLC)8.2.121.0affected
CiscoCisco Wireless LAN Controller (WLC)8.8.125.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.150.0affected
CiscoCisco Wireless LAN Controller (WLC)8.2.111.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.105.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.108.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.108.0affected
CiscoCisco Wireless LAN Controller (WLC)8.2.166.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.103.0affected
CiscoCisco Wireless LAN Controller (WLC)8.3.140.0affected
CiscoCisco Wireless LAN Controller (WLC)8.6.101.0affected
CiscoCisco Wireless LAN Controller (WLC)8.4.100.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.160.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.161.0affected
CiscoCisco Wireless LAN Controller (WLC)8.8.130.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.120.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.121.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.113.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.122.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.130.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.141.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.142.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.171.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.150.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.151.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.162.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.182.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.171.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.180.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.181.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.182.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.170.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.183.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.182.7affected
CiscoCisco Wireless LAN Controller (WLC)8.5.182.105affected
CiscoCisco Wireless LAN Controller (WLC)8.5.182.106affected
CiscoCisco Wireless LAN Controller (WLC)8.10.185.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.182.107affected
CiscoCisco Wireless LAN Controller (WLC)8.5.182.11affected
CiscoCisco Wireless LAN Controller (WLC)8.5.182.108affected
CiscoCisco Wireless LAN Controller (WLC)8.10.190.0affected
CiscoCisco Wireless LAN Controller (WLC)8.10.195.0affected
CiscoCisco Wireless LAN Controller (WLC)8.5.182.12affected

Weaknesses

  • CWE-805: Buffer Access with Incorrect Length Value

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References