CVE-2024-39552

highpriority · track · 0EPSS 0.006 · 48 %ileEUNLUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.59% (48th) EPSS

CVSS 7.5 · high

Is it mine?

55 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · ncsc_nl

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

8.7

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · sirt@juniper.net USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NCSC-NL NL

v4.08.7highCVSS: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:Asecondary · ENISA EU

v4.08.7highCVSS: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:Xsecondary · sirt@juniper.net US

v4.06.6mediumCVSS: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:U/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:Xsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-755USCWE-755US

affected products (55)

Products and version ranges known to be affected.

Juniper Networks Junos OS0 → 20.4R3-S9enisa_euvdEU
Juniper Networks Junos OS21.2 → 21.2R3-S7enisa_euvdEU
Juniper Networks Junos OS21.3 → 21.3R3-S6enisa_euvdEU
Juniper Networks Junos OS21.4 → 21.4R3-S6enisa_euvdEU
Juniper Networks Junos OS22.1 → 22.1R3-S4enisa_euvdEU
Juniper Networks Junos OS22.2 → 22.2R3-S3enisa_euvdEU
Juniper Networks Junos OS22.3 → 22.3R3-S2enisa_euvdEU
Juniper Networks Junos OS22.4 → 22.4R3enisa_euvdEU
Juniper Networks Junos OS23.2 → 23.2R2enisa_euvdEU
Juniper Networks Junos OS Evolved0 → 21.2R3-S7-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved21.3-EVO → 21.3R3-S5-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved21.4-EVO → 21.4R3-S8-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved22.1-EVO → 22.1R3-S4-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved22.2-EVO → 22.2R3-S3-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved22.3-EVO → 22.3R3-S2-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved22.4-EVO → 22.4R3-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved23.2-EVO → 23.2R2-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved23.4-EVO → 23.4R1-EVOenisa_euvdEU
junos_osall versionsncsc_nlNLcpe:2.3:a:juniper_networks:junos_os:0:*:*:*:*:*:*:*
junos_osall versionsncsc_nlNLcpe:2.3:a:juniper_networks:junos_os:21.2:*:*:*:*:*:*:*

showing 20 of 55

advisories (1)

Vendor and ecosystem advisories describing this.

NCSC-2024-0290Kwetsbaarheden verholpen in Juniper Junos OS en Junos OS EvolvedNL2024-07-12csaf · ncsc_nlNL
Er zijn kwetsbaarheden gevonden en verholpen in Juniper Junos OS en Junos OS Evolved.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd ncsc_nl NVD CVE.org MITRE

published 2024-07-11modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

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