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8.6 High

CVE-2025-20162 A vulnerability in the DHCP snooping security feature of Cisco IOS XE Software could allow an unauthenticated, remote…

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 and versions

Product Affected versions Fixed in
Cisco IOS XE Software 17.15 17.15.1a → 17.15.1 No fix stated
Cisco IOS XE Software 17.14 17.14.1a → 17.14.1 No fix stated
Cisco IOS XE Software 17.13 17.13.1a → 17.13.1 No fix stated
Cisco IOS XE Software 17.12 17.12.1a → 17.12.4 No fix stated
Cisco IOS XE Software 17.11 17.11.1a → 17.11.1 No fix stated
Cisco IOS XE Software 17.10 17.10.1a → 17.10.1 No fix stated
Cisco IOS XE Software 17.9 17.9.1a → 17.9.6 No fix stated
Cisco IOS XE Software 17.8 17.8.1a → 17.8.1 No fix stated
Cisco IOS XE Software 17.7 17.7.1a → 17.7.2 No fix stated
Show the 8 other branches
Product Affected versions Fixed in
Cisco IOS XE Software 17.6 17.6.1y → 17.6.8 No fix stated
Cisco IOS XE Software 17.5 17.5.1a → 17.5.1 No fix stated
Cisco IOS XE Software 17.4 17.4.1a → 17.4.2 No fix stated
Cisco IOS XE Software 17.3 17.3.1a → 17.3.8 No fix stated
Cisco IOS XE Software 17.2 17.2.1r → 17.2.3 No fix stated
Cisco IOS XE Software 17.1 17.1.1s → 17.1.3 No fix stated
Cisco IOS XE Software 16.12 16.12.1s → 16.12.8 No fix stated
Cisco IOS XE Software 16.11 16.11.1s → 16.11.2 No fix stated

References

Timeline

  1. Published
  2. Last modified

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