CVE-2022-22183

Junos OS Evolved: A remote attacker may cause a CPU Denial of Service by sending genuine traffic to a device on a specific IPv4 port.

HIGH
7.5
CVSS Score
Published: April 14, 2022 at 03:50 PM UTC
Updated: June 17, 2026 at 04:27 AM UTC
2 products affected across 2 vendorsJunos OS EvolvedJunos OS Evolved

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

Description

An Improper Access Control vulnerability in Juniper Networks Junos OS Evolved allows a network-based unauthenticated attacker who is able to connect to a specific open IPv4 port, which in affected releases should otherwise be unreachable, to cause the CPU to consume all resources as more traffic is sent to the port to create a Denial of Service (DoS) condition. Continued receipt and processing of these packets will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS Evolved 20.4 versions prior to 20.4R3-S2-EVO; 21.1 versions prior to 21.1R3-S1-EVO; 21.2 versions prior to 21.2R3-EVO; 21.3 versions prior to 21.3R2-EVO; 21.4 versions prior to 21.4R2-EVO. This issue does not affect Junos OS.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

20.4 ≤ v < 20.4R3-S2-EVO21.1 ≤ v < 21.1R3-S1-EVO21.2 ≤ v < 21.2R3-EVO21.3 ≤ v < 21.3R2-EVO21.4 ≤ v < 21.4R2-EVO20.421.121.221.321.4
Affected range stops below 20.4R3-S2-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 21.1R3-S1-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 21.2R3-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 21.3R2-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 21.4R2-EVO, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
https://kb.juniper.net/JSA69516

CVSS

7.5HIGHjuniper
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-16CWE-200CWE-284NVD-CWE-Other

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