CVE-2024-39511

mediumpriority · track · 0EPSS 0.001 · 4 %ileDEEUNLRUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.15% (4th) EPSS

CVSS 5.5 · medium

Is it mine?

34 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

An Improper Input Validation vulnerability in the 802.1X Authentication (dot1x) Daemon of Juniper Networks Junos OS allows a local, low-privileged attacker with access to the CLI to cause a Denial of Service (DoS). On running a specific operational dot1x command, the dot1x daemon crashes. An attacker can cause a sustained DoS condition by running this command repeatedly. When the crash occurs, the authentication status of any 802.1x clients is cleared, and any authorized dot1x port becomes unauthorized. The client cannot re-authenticate until the dot1x daemon restarts. This issue affects Junos OS: * All versions before 20.4R3-S10; * 21.2 versions before 21.2R3-S7; * 21.4 versions before 21.4R3-S6; * 22.1 versions before 22.1R3-S5; * 22.2 versions before 22.2R3-S3; * 22.3 versions before 22.3R3-S2; * 22.4 versions before 22.4R3-S1; * 23.2 versions before 23.2R2.

cvss

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

6.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.5mediumAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · sirt@juniper.net USexploitability 1.8 · impact 3.6

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · NCSC-NL NL

v4.06.8mediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:Nsecondary · ENISA EU

v4.06.8mediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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

v4.04.3mediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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-20USCWE-20USCWE-404US

affected products (34)

Products and version ranges known to be affected.

Juniper JUNOSall versionscert_bundDEcpe:/o:juniper:junos:-
Juniper Networks Junos OS0 → 20.4R3-S10enisa_euvdEU
Juniper Networks Junos OS21.2 → 21.2R3-S7enisa_euvdEU
Juniper Networks Junos OS21.4 → 21.4R3-S6enisa_euvdEU
Juniper Networks Junos OS22.1 → 22.1R3-S5enisa_euvdEU
Juniper Networks Junos OS22.2 → 22.2R3-S3enisa_euvdEU
Juniper Networks Junos OS22.3 → 22.3R3-S2enisa_euvdEU
Juniper Networks Junos OS22.4 → 22.4R3-S1enisa_euvdEU
Juniper Networks Junos OS23.2 → 23.2R2enisa_euvdEU
Juniper Networks Inc. JunOS≤ 20.4R3-S10fstec_bduRU
Juniper Networks Inc. JunOS21.2 → 21.2R3-S7fstec_bduRU
Juniper Networks Inc. JunOS21.4 → 21.4R3-S6fstec_bduRU
Juniper Networks Inc. JunOS22.1 → 22.1R3-S5fstec_bduRU
Juniper Networks Inc. JunOS22.2 → 22.2R3-S3fstec_bduRU
Juniper Networks Inc. JunOS22.3 → 22.3R3-S2fstec_bduRU
Juniper Networks Inc. JunOS22.4 → 22.4R3-S1fstec_bduRU
Juniper Networks Inc. JunOS23.2 → 23.2R2fstec_bduRU
junos_osall versionsncsc_nlNLcpe:2.3:a:juniper_networks:junos_os:22.1:*:*:*:*:*:*:*
junos_osall versionsncsc_nlNLcpe:2.3:a:juniper_networks:junos_os:22.2:*:*:*:*:*:*:*
junos_osall versionsncsc_nlNLcpe:2.3:a:juniper_networks:junos_os:22.3:*:*:*:*:*:*:*

showing 20 of 34

advisories (2)

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.
WID-SEC-W-2024-1591Juniper JUNOS: Mehrere SchwachstellenDeutsch2024-07-10csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS ausnutzen, um einen Denial of Service zu verursachen, Informationen offenzulegen, Privilegien zu erweitern und Sicherheitsmechanismen inklusive 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 ncsc_nl NVD CVE.org MITRE

published 2024-07-10modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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