NVD

CVE-2024-39531 Detail

Description

An Improper Handling of Values vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows a network-based, unauthenticated attacker to cause a Denial-of-Service (DoS). If a value is configured for DDoS bandwidth or burst parameters for any protocol in a queue, all protocols which share the same queue will have their bandwidth or burst value changed to the new value. If, for example, OSPF was configured with a certain bandwidth value, ISIS would also be limited to this value. So inadvertently either the control plane is open for a high level of specific traffic which was supposed to be limited to a lower value, or the limit for a certain protocol is so low that chances to succeed with a volumetric DoS attack are significantly increased. This issue affects Junos OS Evolved on ACX 7000 Series: * All versions before 21.4R3-S7-EVO, * 22.1 versions before 22.1R3-S6-EVO, * 22.2 versions before 22.2R3-S3-EVO, * 22.3 versions before 22.3R3-S3-EVO, * 22.4 versions before 22.4R3-S2-EVO, * 23.2 versions before 23.2R2-EVO, * 23.4 versions before 23.4R1-S1-EVO, 23.4R2-EVO.

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.

Nist CVSS score does not match with CNA score

CNA: Juniper Networks, Inc.

CVSS-B 8.7 HIGH

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

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/JSA82991	CVE, Inc., Juniper Networks	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-229	Improper Handling of Values	Juniper Networks, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

3 change records found show changes

Initial Analysis by NIST 1/22/2026 4:20:15 PM

Action

Type

Old Value

New Value

Added

CPE Configuration

Record truncated, showing 2048 of 4622 characters.
View Entire Change Record

AND
     OR
          *cpe:2.3:o:juniper:junos_os_evolved:21.4:r1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.4:-:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.1:r1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.4:r2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.4:r2-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.4:r2-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.1:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.1:r1-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.4:r1-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.2:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.2:r1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.3:r1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.1:r2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.4:r3:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.2:r2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.4:r3-s3:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.2:r2-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.1:r2-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.1:r3:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.1:r3-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.1:r3-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.2:r2-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.2:r3:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.3:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.3:r1-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.3:r2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:22.4:r1:*:*:*:*:*:*

Added

Reference Type

CVE: https://supportportal.juniper.net/JSA82991 Types: Vendor Advisory

Added

Reference Type

Juniper Networks, Inc.: https://supportportal.juniper.net/JSA82991 Types: Vendor Advisory

New CVE Received from Juniper Networks, Inc. 7/11/2024 1:15:10 PM

Action	Type	New Value
Added	Description	An Improper Handling of Values vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved on ACX 7000 Series allows a network-based, unauthenticated attacker to cause a Denial-of-Service (DoS). If a value is configured for DDoS bandwidth or burst parameters for any protocol in a queue, all protocols which share the same queue will have their bandwidth or burst value changed to the new value. If, for example, OSPF was configured with a certain bandwidth value, ISIS would also be limited to this value. So inadvertently either the control plane is open for a high level of specific traffic which was supposed to be limited to a lower value, or the limit for a certain protocol is so low that chances to succeed with a volumetric DoS attack are significantly increased. This issue affects Junos OS Evolved on ACX 7000 Series: * All versions before 21.4R3-S7-EVO, * 22.1 versions before 22.1R3-S6-EVO, * 22.2 versions before 22.2R3-S3-EVO, * 22.3 versions before 22.3R3-S3-EVO, * 22.4 versions before 22.4R3-S2-EVO, * 23.2 versions before 23.2R2-EVO, * 23.4 versions before 23.4R1-S1-EVO, 23.4R2-EVO.
Added	CVSS V4.0	Juniper Networks, Inc. CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Added	CVSS V3.1	Juniper Networks, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added	CWE	Juniper Networks, Inc. CWE-229
Added	Reference	Juniper Networks, Inc. https://supportportal.juniper.net/JSA82991 [No types assigned]

Quick Info

CVE Dictionary Entry:
CVE-2024-39531
NVD Published Date:
07/11/2024
NVD Last Modified:
01/22/2026
Source:
Juniper Networks, Inc.

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2024-39531 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

Initial Analysis by NIST 1/22/2026 4:20:15 PM

CVE Modified by CVE 11/21/2024 4:27:56 AM

New CVE Received from Juniper Networks, Inc. 7/11/2024 1:15:10 PM

Quick Info