All vulnerabilities
CVE-2018-0173

Cisco IOS and IOS XE Software Improper Input Validation Vulnerability

Cisco IOS and IOS XE SoftwareOperating systems
Open in ThreatlineRecord JSON
CVSS
8.6High
ExploitationExploited in the wildAdded to KEV 3 Mar 2022CISA KEV
Exploit odds (EPSS)7.61%Chance of exploitation activity in the next 30 days, higher than 94% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline17 Mar 2022Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 28 Mar 2018, 22:00 UTCPublishedCVE List
  2. 3 Mar 2022Added to CISA KEVCISA KEV

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).

Text from CVE List

Affected versions 1

  • Cisco IOS and IOS XEaffected: Cisco IOS and IOS XECVE List

References 6