theinfosecnews
theinfosecnews
Subscribe to Daily Digest

CVE-2022-20821

CISA KEV

Published May 23, 2022 · Updated April 3, 2026

high
Official Description+

Cisco IOS XR software health check opens TCP port 6379 by default on activation. An attacker can connect to the Redis instance on the open port and allow access to the Redis instance that is running within the NOSi container.

Affected Products

VendorProduct
CiscoIOS XR

Patch Status

Patch by 2022-06-13

Recommended Actions

  1. Check if your systems use any of the affected products listed above.
  2. Apply vendor patches immediately if available.
  3. This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
  4. Monitor vendor advisories for updates and additional mitigations.
  5. Review logs for indicators of compromise related to CVE-2022-20821.