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CVE-2022-22154

Junos Fusion: A Satellite Device can be controlled by rewiring it to a foreign AD causing a DoS

Medium6.8EPSS 0.24%
Published
Updated
Reserved
Assigned by
juniper

Description

In a Junos Fusion scenario an External Control of Critical State Data vulnerability in the Satellite Device (SD) control state machine of Juniper Networks Junos OS allows an attacker who is able to make physical changes to the cabling of the device to cause a denial of service (DoS). An SD can get rebooted and subsequently controlled by an Aggregation Device (AD) which does not belong to the original Fusion setup and is just connected to an extended port of the SD. To carry out this attack the attacker needs to have physical access to the cabling between the SD and the original AD. This issue affects: Juniper Networks Junos OS 16.1R1 and later versions prior to 18.4R3-S10; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R3-S4. This issue does not affect Juniper Networks Junos OS versions prior to 16.1R1.

Scores

CVSS scores of CVE-2022-22154, by who scored it
Scored byCVSSScoreVector
juniperCNA (assigner)3.1Medium6.8CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1Medium6.8CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.24% · top 84% of all CVEs (6 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.8.

Weakness

Affected products

  • Juniper Networks · Junos OS

    • unaffected unspecified – < 16.1R1
    • affected 16.1R1 – < 16.1*
    • affected 18.4 – < 18.4R3-S10
    • affected 19.1 – < 19.1R3-S7
    • affected 19.2 – < 19.2R3-S4

What to do

Solution: The following software releases have been updated to resolve this specific issue: 18.4R3-S10, 19.1R3-S7, 19.2R3-S4, 19.3R1, and all subsequent releases.

Workaround: There are no viable workarounds for this issue other than ensuring that the wiring between the AD and the SD can't be tampered with.

Exploitation: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .