CVE-2022-22164

Junos OS Evolved: Telnet service may be enabled when it is expected to be disabled.

MEDIUM
5.3
CVSS Score
Published: January 19, 2022 at 12:21 AM 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
MEDIUM5.3
Exploit prediction
EPSS 0.7%

Description

An Improper Initialization vulnerability in Juniper Networks Junos OS Evolved may cause a commit operation for disabling the telnet service to not take effect as expected, resulting in the telnet service staying enabled. When it is not intended to be operating on the device, an administrator can issue the following command to verify whether telnet is operating in the background: user@device > show system connections | grep :23 tcp 0 0 0.0.0.0:23 0.0.0.0:* LISTEN 20879/xinetd This issue affects: Juniper Networks Junos OS Evolved All versions prior to 20.4R2-S2-EVO; 21.1 version 21.1R1-EVO and later versions; 21.2 versions prior to 21.2R2-EVO.

Affected

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

v < 20.4R2-S2-EVO21.1R1-EVO ≤ v < 21.1*21.2 ≤ v < 21.2R2-EVO21.1R1-EVO21.2
Affected range stops below 20.4R2-S2-EVO, so it looks safe — our inference, not a vendor statement
Affected range stops below 21.1*, so it looks safe — our inference, not a vendor statement
Affected range stops below 21.2R2-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/JSA11272

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-665

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