NVD

CVE-2023-44199 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS). On Junos MX Series platforms with Precision Time Protocol (PTP) configured, a prolonged routing protocol churn can lead to an FPC crash and restart. This issue affects Juniper Networks Junos OS on MX Series: * All versions prior to 20.4R3-S4; * 21.1 version 21.1R1 and later versions; * 21.2 versions prior to 21.2R3-S2; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3; * 22.1 versions prior to 22.1R3; * 22.2 versions prior to 22.2R1-S1, 22.2R2.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

CNA: Juniper Networks, Inc.

Base Score: 7.5 HIGH

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://supportportal.juniper.net/JSA73165	CVE, Inc., Juniper Networks	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-754	Improper Check for Unusual or Exceptional Conditions	NIST Juniper Networks, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

CVE Modified by CISA-ADP 6/17/2026 2:27:06 AM

Action

Type

Old Value

New Value

Added

Affected

[{"vendor":"juniper_networks","product":"junos_os","defaultStatus":"unknown","cpes":["cpe:2.3:a:juniper_networks:junos_os:*:*:*:*:*:*:*:*"],"versions":[{"version":"0","lessThan":"20.4r3-s4","versionType":"semver","status":"affected"},{"version":"21.1r1","lessThan":"21.1*","versionType":"semver","status":"affected"},{"version":"21.2","lessThan":"21.2r3-s2","versionType":"semver","status":"affected"},{"version":"21.3","lessThan":"21.3r3-s5","versionType":"semver","status":"affected"},{"version":"21.4","lessThan":"21.4r3","versionType":"semver","status":"affected"},{"version":"22.1","lessThan":"22.1r3","versionType":"semver","status":"affected"},{"version":"22.2","lessThan":"22.2r1-s1,22.2r2","versionType":"semver","status":"affected"}]}]

Added

SSVC

{"timestamp":"2024-09-18T14:33:42.839560Z","id":"CVE-2023-44199","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}

Initial Analysis by NIST 10/20/2023 1:03:27 PM

Action	Type	Old Value	New Value
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	CWE		NIST CWE-754
Added	CPE Configuration		Record truncated, showing 2048 of 4008 characters. View Entire Change Record AND OR cpe:2.3:o:juniper:junos::::::::* versions up to (excluding) 20.4 cpe:2.3:o:juniper:junos:20.4:-::::::* cpe:2.3:o:juniper:junos:20.4:r1::::::* cpe:2.3:o:juniper:junos:20.4:r1-s1::::::* cpe:2.3:o:juniper:junos:20.4:r2::::::* cpe:2.3:o:juniper:junos:20.4:r2-s1::::::* cpe:2.3:o:juniper:junos:20.4:r2-s2::::::* cpe:2.3:o:juniper:junos:20.4:r3::::::* cpe:2.3:o:juniper:junos:20.4:r3-s1::::::* cpe:2.3:o:juniper:junos:20.4:r3-s2::::::* cpe:2.3:o:juniper:junos:20.4:r3-s3::::::* cpe:2.3:o:juniper:junos:21.1:r1::::::* cpe:2.3:o:juniper:junos:21.1:r1-s1::::::* cpe:2.3:o:juniper:junos:21.1:r2::::::* cpe:2.3:o:juniper:junos:21.1:r2-s1::::::* cpe:2.3:o:juniper:junos:21.1:r2-s2::::::* cpe:2.3:o:juniper:junos:21.1:r3::::::* cpe:2.3:o:juniper:junos:21.1:r3-s1::::::* cpe:2.3:o:juniper:junos:21.1:r3-s2::::::* cpe:2.3:o:juniper:junos:21.1:r3-s3::::::* cpe:2.3:o:juniper:junos:21.1:r3-s4::::::* cpe:2.3:o:juniper:junos:21.1:r3-s5::::::* cpe:2.3:o:juniper:junos:21.2:-::::::* cpe:2.3:o:juniper:junos:21.2:r1::::::* cpe:2.3:o:juniper:junos:21.2:r1-s1::::::* cpe:2.3:o:juniper:junos:21.2:r1-s2::::::* cpe:2.3:o:juniper:junos:21.2:r2::::::* cpe:2.3:o:juniper:junos:21.2:r2-s1::::::* cpe:2.3:o:juniper:junos:21.2:r2-s2::::::* cpe:2.3:o:juniper:junos:21.2:r3::::::* cpe:2.3:o:juniper:junos:21.2:r3-s1::::::* cpe:2.3:o:juniper:junos:21.2:r3-s2::::::* cpe:2.3:o:juniper:junos:21.3:-::::::* cpe:2.3:o:juniper:junos:21.3:r1::::::* cpe:2.3:o:juniper:junos:21.3:r1-s1::::::* *cpe:2.3:o:ju
Changed	Reference Type	https://supportportal.juniper.net/JSA73165 No Types Assigned	https://supportportal.juniper.net/JSA73165 Vendor Advisory

Quick Info

CVE Dictionary Entry:
CVE-2023-44199
NVD Published Date:
10/12/2023
NVD Last Modified:
06/17/2026
Source:
Juniper Networks, Inc.

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