CVE-2017-12238
CISA KEVPublished March 3, 2022 · Updated April 3, 2026
high
Official Description+
A vulnerability in the Virtual Private LAN Service (VPLS) code of Cisco IOS for Cisco Catalyst 6800 Series Switches could allow an unauthenticated, adjacent attacker to cause a denial of service.
Affected Products
| Vendor | Product |
|---|---|
| Cisco | Catalyst 6800 Series Switches |
Patch Status
Patch by 2022-03-24
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-2017-12238.