CVE-2018-0175 — Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability
Overview
Format string vulnerability in the Link Layer Discovery Protocol (LLDP) subsystem of Cisco IOS Software, Cisco IOS XE Software, and Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device.
Vulnerability details
- CVE ID
- CVE-2018-0175
- Vulnerability
- Cisco IOS, XR, and XE Software Buffer Overflow Vulnerability
- Vendor
- Cisco
- Affected products
- Cisco: IOS, XR, and XE Software
- Severity
- HIGH
- Exploitation status
- Actively exploited in the wild (CISA KEV)
- Published
- 2022-03-03
Remediation guidance
CVE-2018-0175 is in CISA's Known Exploited Vulnerabilities (KEV) catalog — U.S. federal civilian agencies are required to remediate it under Binding Operational Directive 22-01. Treat it as a priority for every environment.
Apply the vendor's official security update for Cisco the affected product as soon as possible. Where a patch is unavailable, apply vendor mitigations or isolate/segment exposed systems.
Hunt for indicators of compromise tied to this vulnerability and confirm logging/EDR coverage on affected assets.
Authoritative references
Remediate CVE-2018-0175 — and stay ahead of the next one
CVE-2018-0175 is listed in the CISA KEV catalog as actively exploited — treat remediation as urgent. Scan your domain free to see whether CVE-2018-0175 and other Cisco issues affect you and get a prioritized remediation report (full report from ₹999) — or stream the full feed of 1,600+ actively-exploited CVEs straight into your SOC.
📡 Get a free alert the moment a CVE like this lands in the KEV catalog → Join Sentinel APEX on Telegram