CVE-2018-0155
CISA KEVPublished March 3, 2022 · Updated April 3, 2026
high
Official Description+
A vulnerability in the Bidirectional Forwarding Detection (BFD) offload implementation of Cisco Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches could allow an unauthenticated, remote attacker to cause a crash of the iosd process, causing a denial-of-service (DoS) condition.
Affected Products
| Vendor | Product |
|---|---|
| Cisco | Catalyst 4500 Series Switches and Cisco Catalyst 4500-X Series Switches |
Patch Status
Patch by 2022-03-17
Recommended Actions
- Check if your systems use any of the affected products listed above.
- Apply vendor patches immediately if available.
- This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
- Monitor vendor advisories for updates and additional mitigations.
- Review logs for indicators of compromise related to CVE-2018-0155.