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PatchSiren cyber security CVE debrief

CVE-2018-0174 Cisco CVE debrief

CVE-2018-0174 is a Cisco IOS and IOS XE Software improper input validation vulnerability that CISA listed in its Known Exploited Vulnerabilities catalog. That KEV listing is an important defensive signal: even without a CVSS score in the supplied data, the vulnerability is considered actively exploited or at least known to be exploited, so Cisco device owners should treat remediation as urgent.

Vendor
Cisco
Product
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 and security teams responsible for Cisco IOS and IOS XE devices, especially administrators of critical, internet-facing, or hard-to-replace infrastructure.

Technical summary

The supplied source corpus identifies the issue as an improper input validation vulnerability in Cisco IOS Software and Cisco IOS XE Software. CISA’s KEV catalog entry indicates the vulnerability is known to be exploited in the wild and directs defenders to apply vendor updates.

Defensive priority

High. CISA KEV inclusion raises remediation priority above routine patching and supports expedited update planning for affected Cisco devices.

Recommended defensive actions

  • Inventory Cisco IOS and IOS XE assets and identify any devices that may be affected by this vulnerability.
  • Follow Cisco’s vendor remediation guidance and apply the recommended software updates as soon as practical.
  • Prioritize exposed, critical, and difficult-to-segment devices for immediate remediation.
  • Use compensating controls and heightened monitoring if patching must be delayed.
  • Track CISA KEV and Cisco advisories for any follow-on guidance or updated remediation instructions.

Evidence notes

The supplied corpus includes CISA KEV metadata naming the vulnerability, vendor, product, date added, due date, and required action. The official resource links point to the CVE record, NVD detail page, and CISA KEV catalog. No CVSS score or deeper technical impact details were provided in the source corpus, so this debrief avoids unsupported claims.

Official resources

CISA’s KEV entry in the supplied corpus is dated 2022-03-03, with a due date of 2022-03-17. The corpus does not provide the original vulnerability disclosure date, only the KEV listing date and related metadata.