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PatchSiren cyber security CVE debrief

CVE-2018-0172 Cisco CVE debrief

CVE-2018-0172 is a Cisco IOS and IOS XE Software improper input validation vulnerability that CISA lists in its Known Exploited Vulnerabilities catalog. Because it is on the KEV list, defenders should treat affected Cisco network devices as a priority for inventory, patching, and validation against Cisco guidance.

Vendor
Cisco
Product
IOS and IOS XE Software
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-03-03
Original CVE updated
2022-03-03
Advisory published
2022-03-03
Advisory updated
2022-03-03

Who should care

Network operations, vulnerability management, SOC/incident response, and infrastructure teams running Cisco IOS or IOS XE Software, especially on exposed or business-critical devices.

Technical summary

The available record identifies an improper input validation issue in Cisco IOS and IOS XE Software. CISA’s KEV entry indicates the vulnerability is known to be exploited and directs organizations to apply updates per vendor instructions.

Defensive priority

Urgent: this is a CISA KEV-listed Cisco network-device vulnerability with a remediation due date in the supplied record.

Recommended defensive actions

  • Inventory Cisco IOS and IOS XE assets and confirm which devices are affected.
  • Prioritize vendor-guided updates for affected systems, especially internet-facing or critical infrastructure.
  • Restrict access to management interfaces and reduce exposure while remediation is pending.
  • Validate remediation after patching and monitor affected devices for abnormal activity or configuration changes.

Evidence notes

The supplied CISA KEV metadata names this issue "Cisco IOS and IOS XE Software Improper Input Validation Vulnerability" for Cisco IOS and IOS XE Software, with dateAdded 2022-03-03 and dueDate 2022-03-17. The required action in the source metadata is "Apply updates per vendor instructions." Official reference links supplied include the CVE record, NVD detail page, CISA KEV catalog, and the exact KEV feed item.

Official resources

In the supplied corpus, the CVE record and CISA KEV entry are dated 2022-03-03, and CISA’s remediation due date is 2022-03-17. This debrief treats those as record dates, not as the original vulnerability introduction date.