CVE-2024-21590

mediumpriority · track · 26EPSS 0.004 · 30 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.36% (30th) EPSS

CVSS 6.5 · medium

Is it mine?

29 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-28

An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative domain to send specifically crafted packets to the Routing Engine (RE) to cause a Denial of Service (DoS). When specifically crafted transit MPLS IPv4 packets are received by the Packet Forwarding Engine (PFE), these packets are internally forwarded to the RE. Continued receipt of these packets may create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS: * All versions before 21.2R3-S8-EVO; * from 21.4-EVO before 21.4R3-S6-EVO; * from 22.2-EVO before 22.2R3-S4-EVO; * from 22.3-EVO before 22.3R3-S3-EVO; * from 22.4-EVO before 22.4R3-EVO; * from 23.2-EVO before 23.2R2-EVO. * from 23.4-EVO before 23.4R1-S1-EVO.

cvss

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

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.1

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.15.3mediumAV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · sirt@juniper.net USexploitability 1.6 · impact 3.6

v4.07.1highCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.07.1highCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/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:Xsecondary · sirt@juniper.net US

v4.04.9mediumCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/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:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20US

affected products (29)

Products and version ranges known to be affected.

Juniper EX Seriesall versionscert_bundDEcpe:/h:juniper:ex:-
Juniper JUNOSall versionscert_bundDEcpe:/o:juniper:junos:-
Juniper JUNOS Evolvedall versionscert_bundDEcpe:/o:juniper:junos:evolved
Juniper MX Seriesall versionscert_bundDEcpe:/h:juniper:mx:-
Juniper QFX Seriesall versionscert_bundDEcpe:/h:juniper:qfx:-
Juniper SRX Seriesall versionscert_bundDEcpe:/h:juniper:srx_service_gateways:-
Juniper Networks Junos OS Evolvedall versionsenisa_euvdEU
Juniper Networks Junos OS Evolved0 → 21.2R3-S8-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved21.4-EVO → 21.4R3-S6-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved22.2-EVO → 22.2R3-S4-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved22.3-EVO → 22.3R3-S3-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-S1-EVOenisa_euvdEU
Juniper Networks Inc. Junos OS Evolved≤ 21.2R3-S8-EVOfstec_bduRU
Juniper Networks Inc. Junos OS Evolved21.4-EVO → 21.4R3-S6-EVOfstec_bduRU
Juniper Networks Inc. Junos OS Evolved22.2-EVO → 22.2R3-S4-EVOfstec_bduRU
Juniper Networks Inc. Junos OS Evolved22.3-EVO → 22.3R3-S3-EVOfstec_bduRU
Juniper Networks Inc. Junos OS Evolved22.4-EVO → 22.4R3-EVOfstec_bduRU
Juniper Networks Inc. Junos OS Evolved23.2-EVO → 23.2R2-EVOfstec_bduRU

showing 20 of 29

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-0855Juniper Produkte: Mehrere SchwachstellenDeutsch2024-04-10csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Juniper Produkten ausnutzen um Denial of Service Zustände zu verursachen, Informationen offenzulegen und Sicherheitsmechanismen zu umgehen.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2024-04-12modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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