MEDIUMCVSS v3.1 6.5Actively exploited · CISA KEV since 2022-05-23Vulnerability

CVE-2022-20821

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.

Properties

Euvd product
Cisco IOS XR Software
Vulnerability name
Cisco IOS XR Open Port Vulnerability
First seen
2025-10-21T23:15:39+00:00
Cvss score
6.5
Epss score
0.11471
Last seen
2026-10-19T12:00:27+00:00
Due date
2022-06-13
Euvd assigner
cisco
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2022-05-23T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2022-05-23
Score
6.5
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Cisco
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
In Signal since
initial import (Sep 2026)
Euvd base score
6.5

Related Entities (31 · showing 23)

AFFECTS_PRODUCT (28 · showing 20)

→[Product]cpe:2.3:h:cisco:ncs_55a2:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs_5002:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs-55a1-24h:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs-55a2-mod-s:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs-55a2-mod-hd-s:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs_5504:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs-55a1-36h-se-s:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs_1004:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs_55a1:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs_1002:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs_5001:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:8212:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs-55a1-24q6h-s:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:8202:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs_5501-se:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs_5502-se:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs-55a2-mod-hx-s:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:cisco:ios_xr:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs_5516:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:h:cisco:ncs_5508:-:*:*:*:*:*:*:*

DESCRIBES (1)

←[KEVEntry]Cisco IOS XR Open Port Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Exposure of Sensitive Information to an Unauthorized Actor

INVOLVES (1)

←[Signal]kev_added · 2022-05-23

Explore deeper with Ninja Signal's threat intelligence graph

Search in SpektrOpen Signal Desktop
CVE-2022-20821 (CVSS v3.1 6.5) — Ninja Signal Threat Intelligence | Ninja Signal