NVD

CVE-2024-39552 Detail

Description

An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a network based, unauthenticated attacker to cause the RPD process to crash leading to a Denial of Service (DoS). When a malformed BGP UPDATE packet is received over an established BGP session, RPD crashes and restarts. Continuous receipt of the malformed BGP UPDATE messages will create a sustained Denial of Service (DoS) condition for impacted devices. This issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations. This issue requires a remote attacker to have at least one established BGP session. This issue affects: Juniper Networks Junos OS: * All versions earlier than 20.4R3-S9; * 21.2 versions earlier than 21.2R3-S7; * 21.3 versions earlier than 21.3R3-S5; * 21.4 versions earlier than 21.4R3-S6; * 22.1 versions earlier than 22.1R3-S4; * 22.2 versions earlier than 22.2R3-S3; * 22.3 versions earlier than 22.3R3-S2; * 22.4 versions earlier than 22.4R3; * 23.2 versions earlier than 23.2R2. Juniper Networks Junos OS Evolved: * All versions earlier than 21.2R3-S7; * 21.3-EVO versions earlier than 21.3R3-S5; * 21.4-EVO versions earlier than 21.4R3-S8; * 22.1-EVO versions earlier than 22.1R3-S4; * 22.2-EVO versions earlier than 22.2R3-S3; * 22.3-EVO versions earlier than 22.3R3-S2; * 22.4-EVO versions earlier than 22.4R3; * 23.2-EVO versions earlier than 23.2R2.

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.

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/R:A

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/JSA75726	CVE, Inc., Juniper Networks	Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-755	Improper Handling of Exceptional Conditions	Juniper Networks, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Initial Analysis by NIST 1/23/2026 2:23:40 PM

Action

Type

Old Value

New Value

Added

CPE Configuration

Record truncated, showing 2048 of 10948 characters.
View Entire Change Record

OR
          *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:21.2:r1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:20.4:r2-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.2:r1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.2:r2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:21.2:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:20.4:r3:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.3:r1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:21.3:r1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:21.3:r2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:21.2:r2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:20.4:r3-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:20.4:r2-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:21.2:-:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:20.4:-:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.2:-:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.2:r1-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.2:r2-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:21.3:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:21.2:r1-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:* versions up to (excluding) 21.2
          *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:21.4:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:21.3:r1-s1:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:21.3:r1-s2:*:*:*:*:*:*
          *cpe:2.3:o:juniper:junos:21.4:r1:*:*:*:*:*:*
          *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:21.2:r2-s2:*:*:*:*:*:*
          *cpe:2.3:o:j

Added

Reference Type

CVE: https://supportportal.juniper.net/JSA75726 Types: Vendor Advisory

Added

Reference Type

Juniper Networks, Inc.: https://supportportal.juniper.net/JSA75726 Types: Vendor Advisory

New CVE Received from Juniper Networks, Inc. 7/11/2024 1:15:16 PM

Action	Type	New Value
Added	Description	An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved allows a network based, unauthenticated attacker to cause the RPD process to crash leading to a Denial of Service (DoS). When a malformed BGP UPDATE packet is received over an established BGP session, RPD crashes and restarts. Continuous receipt of the malformed BGP UPDATE messages will create a sustained Denial of Service (DoS) condition for impacted devices. This issue affects eBGP and iBGP, in both IPv4 and IPv6 implementations. This issue requires a remote attacker to have at least one established BGP session. This issue affects: Juniper Networks Junos OS: * All versions earlier than 20.4R3-S9; * 21.2 versions earlier than 21.2R3-S7; * 21.3 versions earlier than 21.3R3-S5; * 21.4 versions earlier than 21.4R3-S6; * 22.1 versions earlier than 22.1R3-S4; * 22.2 versions earlier than 22.2R3-S3; * 22.3 versions earlier than 22.3R3-S2; * 22.4 versions earlier than 22.4R3; * 23.2 versions earlier than 23.2R2. Juniper Networks Junos OS Evolved: * All versions earlier than 21.2R3-S7; * 21.3-EVO versions earlier than 21.3R3-S5; * 21.4-EVO versions earlier than 21.4R3-S8; * 22.1-EVO versions earlier than 22.1R3-S4; * 22.2-EVO versions earlier than 22.2R3-S3; * 22.3-EVO versions earlier than 22.3R3-S2; * 22.4-EVO versions earlier than 22.4R3; * 23.2-EVO versions earlier than 23.2R2.
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:A/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-755
Added	Reference	Juniper Networks, Inc. https://supportportal.juniper.net/JSA75726 [No types assigned]
Added	Reference	Juniper Networks, Inc. https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N [No types assigned]

Quick Info

CVE Dictionary Entry:
CVE-2024-39552
NVD Published Date:
07/11/2024
NVD Last Modified:
01/23/2026
Source:
Juniper Networks, Inc.

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Information Technology Laboratory

National Vulnerability Database

National Vulnerability Database

CVE-2024-39552 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

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Change History

Initial Analysis by NIST 1/23/2026 2:23:40 PM

CVE Modified by CVE 11/21/2024 4:27:59 AM

CVE Modified by Juniper Networks, Inc. 7/30/2024 6:15:02 PM

New CVE Received from Juniper Networks, Inc. 7/11/2024 1:15:16 PM

Quick Info