DHCP Snooping Vulnerability in Cisco IOS XE Software
CVE-2025-20162

8.6HIGH

Key Information:

Vendor

Cisco
Status
Cisco iOS Xe Software
Vendor
CVE Published:
7 May 2025

Badges

👾 Exploit Exists

What is CVE-2025-20162?

A vulnerability in the DHCP snooping security feature of Cisco IOS XE Software allows an unauthenticated, remote attacker to exploit improper handling of DHCP request packets. By sending malicious DHCP requests, the attacker can cause packets to wedge in the device's interface queue, leading to a denial of service condition for downstream devices. This situation necessitates a system restart to resolve the queue build-up, disrupting network operations. Notably, this vulnerability can be exploited through both unicast and broadcast DHCP packets on VLANs lacking DHCP snooping.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

Cisco IOS XE Software 16.11.1

Cisco IOS XE Software 16.11.1a

Cisco IOS XE Software 16.11.2

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

JSON
.