CVE-2022-20821

Severity not reported CISA KEV

Data quality: kev only. This record comes from the CISA KEV catalog only; NVD details have not been synced yet.

Cisco IOS XR Open Port Vulnerability

Vendor / product: Cisco — IOS XR

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.

CVSS

—

Not reported by the source

Timeline (UTC)

Published: not reported

Modified: not reported

NVD status: not reported

Last synced 1 day ago

Verified against the source API 2026-10-27 06:50 UTC

Exploitation

Listed in CISA KEV

Added 2022-05-23 · due 2022-06-13

Known ransomware use: Unknown

Required action (CISA)

Apply updates per vendor instructions.

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-923

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

No references reported.

Data sources

CISA KEV — fetched 2026-10-27 06:50 UTC · record ↗

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