CVE-2025-20162

Description

A vulnerability in the DHCP snooping security feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a full interface queue wedge, which could result in a denial of service (DoS) condition. This vulnerability is due to improper handling of DHCP request packets. An attacker could exploit this vulnerability by sending DHCP request packets to an affected device. A successful exploit could allow the attacker to cause packets to wedge in the queue, creating a DoS condition for downstream devices of the affected system and requiring that the system restart to drain the queue. Note: This vulnerability can be exploited with either unicast or broadcast DHCP packets on a VLAN that does not have DHCP snooping enabled.

Reserved 2024-10-10 | Published 2025-05-07 | Updated 2025-05-07 | Assigner cisco

Problem types

Uncontrolled Resource Consumption

Product status

16.11.1
affected

16.11.1a
affected

16.11.2
affected

16.11.1s
affected

16.12.1
affected

16.12.1s
affected

16.12.1a
affected

16.12.1c
affected

16.12.2
affected

16.12.3
affected

16.12.8
affected

16.12.2s
affected

16.12.4
affected

16.12.3s
affected

16.12.5
affected

16.12.6
affected

16.12.7
affected

17.1.1
affected

17.1.1s
affected

17.1.1t
affected

17.1.3
affected

17.2.1
affected

17.2.1r
affected

17.2.1v
affected

17.2.2
affected

17.2.3
affected

17.3.1
affected

17.3.2
affected

17.3.3
affected

17.3.1a
affected

17.3.4
affected

17.3.5
affected

17.3.4a
affected

17.3.6
affected

17.3.7
affected

17.3.8
affected

17.3.8a
affected

17.4.1
affected

17.4.2
affected

17.4.1a
affected

17.4.1b
affected

17.5.1
affected

17.5.1a
affected

17.6.1
affected

17.6.2
affected

17.6.1a
affected

17.6.3
affected

17.6.1y
affected

17.6.3a
affected

17.6.4
affected

17.6.5
affected

17.6.6
affected

17.6.6a
affected

17.6.5a
affected

17.6.7
affected

17.6.8
affected

17.6.8a
affected

17.7.1
affected

17.7.1a
affected

17.7.2
affected

17.10.1
affected

17.10.1a
affected

17.8.1
affected

17.8.1a
affected

17.9.1
affected

17.9.2
affected

17.9.1a
affected

17.9.3
affected

17.9.2a
affected

17.9.3a
affected

17.9.4
affected

17.9.5
affected

17.9.4a
affected

17.9.5a
affected

17.9.6
affected

17.9.5e
affected

17.9.5f
affected

17.11.1
affected

17.11.1a
affected

17.12.1
affected

17.12.1a
affected

17.12.2
affected

17.12.3
affected

17.12.4
affected

17.12.3a
affected

17.12.4a
affected

17.12.4b
affected

17.13.1
affected

17.13.1a
affected

17.14.1
affected

17.14.1a
affected

17.15.1
affected

17.15.1a
affected

References

sec.cloudapps.cisco.com/...isco-sa-iosxe-dhcpsn-dos-xBn8Mtks (cisco-sa-iosxe-dhcpsn-dos-xBn8Mtks)

cve.org (CVE-2025-20162)

nvd.nist.gov (CVE-2025-20162)

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