CVE-2022-20821CISA KEVEPSS p95.5%

CVE-2022-20821Cisco IOS XR Open Port Vulnerability

Cisco / IOS XR

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.

Scoring

EPSS11.76% probability of exploitation · percentile 95.5% · 2026-06-18T12:00:27Z

CISA KEV entry

Added to KEV: 2022-05-23

(incoming)1

TypeTargetConfidenceTier
KEVEntryCisco IOS XR Open Port Vulnerabilitykev-cve-2022-208210%live

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Nearest entities by semantic similarity across the cs-graph corpus.

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Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.