7.4
High
CVE-2025-20191 A vulnerability in the Switch Integrated Security Features (SISF) of Cisco IOS Software, Cisco IOS XE Software, Cisco…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco NX-OS Software | Versions not published | |
| Cisco Wireless LAN Controller (WLC) 8.10 | 8.10.105.0 → 8.10.195.0 | No fix stated |
| Cisco Wireless LAN Controller (WLC) 8.9 | 8.9.100.0 → 8.9.111.0 | No fix stated |
| Cisco Wireless LAN Controller (WLC) 8.8 | 8.8.100.0 → 8.8.130.0 | No fix stated |
| Cisco Wireless LAN Controller (WLC) 8.7 | 8.7.102.0 → 8.7.106.0 | No fix stated |
| Cisco Wireless LAN Controller (WLC) | 8.6.101.0 | No fix stated |
| Cisco Wireless LAN Controller (WLC) 8.5 | 8.5.100.0 → 8.5.182.108 | No fix stated |
| Cisco Wireless LAN Controller (WLC) | 8.4.100.0 | No fix stated |
| Cisco Wireless LAN Controller (WLC) 8.3 | 8.3.102.0 → 8.3.150.0 | No fix stated |
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| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Wireless LAN Controller (WLC) 8.2 | 8.2.100.0 → 8.2.170.0 | No fix stated |
References
- cisco-sa-sisf-dos-ZGwt4DdY sec.cloudapps.cisco.com
Timeline
- Published
- Last modified
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