CVE-2022-20821—Cisco IOS XR Open Port Vulnerability

PUBLISHEDvulnerability record
2022-05-23 · last modified June 21, 2025

Metadata

CVE ID:
CVE-2022-20821
Project:
Cisco
Product:
IOS XR
Date Added:
2022-05-23
Due Date:
2022-06-13
Last Updated:
June 21, 2025

Vulnerability Name

Cisco IOS XR Open Port Vulnerability

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.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:
Unknown

Action

Apply updates per vendor instructions.

Additional Notes

  • https://nvd.nist.gov/vuln/detail/CVE-2022-20821

Related Weaknesses

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