CISA Known Exploited Vulnerability

CVE-2018-0173

Cisco · IOS and IOS XE Software

Cisco IOS and IOS XE Software Improper Input Validation Vulnerability

Date added 2022-03-03

BOD 22-01 due date 2022-03-17

CWE CWE-20

Ransomware Unknown

CISA description

A vulnerability in the Cisco IOS Software and Cisco IOS XE Software function that restores encapsulated option 82 information in DHCP Version 4 (DHCPv4) packets can allow for denial-of-service (DoS).

Required action

Apply updates per vendor instructions.

Notes & references

https://nvd.nist.gov/vuln/detail/CVE-2018-0173

Where this lands in 800-53

Vulnerability data triggers these controls during assessment and continuous monitoring.

RA-5 · Vulnerability Monitoring and Scanning
SI-2 · Flaw Remediation
CM-6 · Configuration Settings
SI-7 · Software, Firmware, and Information Integrity
CM-8 · System Component Inventory

External lookups

NVD · CVE-2018-0173
CVE.org · CVE-2018-0173
CISA KEV catalog (canonical)