Vulnerability · Published May 7, 2025 · Assigned by cisco

CVE-2025-20162

High 8.6

In plain English

A high-severity uncontrolled resource consumption in Cisco IOS XE Software from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)8.6High

Exploit odds (30 days)0.5%top 54.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco IOS XE Software	16.11.116.11.1a16.11.216.11.1s16.12.116.12.1s16.12.1a16.12.1c

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References

cisco-sa-iosxe-dhcpsn-dos-xBn8Mtks