CVE-2023-44190

mediumpriority · track · 22EPSS 0.002 · 8 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.19% (8th) EPSS

CVSS 5.4 · medium

Is it mine?

38 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-28

An Origin Validation vulnerability in MAC address validation of Juniper Networks Junos OS Evolved on PTX10001, PTX10004, PTX10008, and PTX10016 devices allows a network-adjacent attacker to bypass MAC address checking, allowing MAC addresses not intended to reach the adjacent LAN to be forwarded to the downstream network. Due to this issue, the router will start forwarding traffic if a valid route is present in forwarding-table, causing a loop and congestion in the downstream layer-2 domain connected to the device. This issue affects Juniper Networks Junos OS Evolved on PTX10001, PTX10004, PTX10008, and PTX10016: * All versions prior to 21.4R3-S5-EVO; * 22.1 versions prior to 22.1R3-S4-EVO; * 22.2 versions 22.2R1-EVO and later; * 22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO; * 22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO; * 23.2 versions prior to 23.2R1-S1-EVO, 23.2R2-EVO.

cvss

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

6.1

010

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

v3.15.4mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Lprimary · NVD / NIST USexploitability 2.8 · impact 2.5

v3.16.1mediumAV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Lsecondary · FSTEC (BDU) RU

v3.16.1mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Lsecondary · ENISA EU

v3.16.1mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:Lsecondary · sirt@juniper.net USexploitability 2.8 · impact 2.7

v3.15mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:Usecondary · 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-346USprimaryCWE-346US

affected products (38)

Products and version ranges known to be affected.

Juniper EX Series 2300all versionscert_bundDEcpe:/h:juniper:ex:ex2300
Juniper EX Series 3400all versionscert_bundDEcpe:/h:juniper:ex:ex3400
Juniper EX Series 4000all versionscert_bundDEcpe:/h:juniper:ex:4000
Juniper EX Series 4100all versionscert_bundDEcpe:/h:juniper:ex:4100
Juniper EX Series 4400all versionscert_bundDEcpe:/h:juniper:ex:4400
Juniper EX Series 4600all versionscert_bundDEcpe:/h:juniper:ex:ex4600
Juniper JUNOSall versionscert_bundDEcpe:/o:juniper:junos:-
Juniper JUNOS Evolvedall versionscert_bundDEcpe:/o:juniper:junos:evolved
Juniper JUNOS PTX Seriesall versionscert_bundDEcpe:/o:juniper:junos:ptx_series
Juniper JUNOS PTX10001all versionscert_bundDEcpe:/o:juniper:junos:ptx10001
Juniper JUNOS PTX10003all versionscert_bundDEcpe:/o:juniper:junos:ptx10003
Juniper JUNOS PTX10004all versionscert_bundDEcpe:/o:juniper:junos:ptx10004
Juniper JUNOS PTX10008all versionscert_bundDEcpe:/o:juniper:junos:ptx10008
Juniper JUNOS PTX10016all versionscert_bundDEcpe:/o:juniper:junos:ptx10016
Juniper MX Seriesall versionscert_bundDEcpe:/h:juniper:mx:-
Juniper QFX Series 5000all versionscert_bundDEcpe:/h:juniper:qfx:qfx5000
Juniper SRX Seriesall versionscert_bundDEcpe:/h:juniper:srx_service_gateways:-
Juniper Networks Junos OS Evolved0 → 21.4R3-S5-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved22.1 → 22.1R3-S4-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved22.2R1-EVO → 22.2*-EVOenisa_euvdEU

showing 20 of 38

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2636Juniper Patchday Oktober 2023Deutsch2023-10-11csaf · cert_bundDE
Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in verschiedenen Juniper Produkten ausnutzen, um Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand auszulösen und seine Privilegien zu erweitern.

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 2023-10-11modified 2026-06-17

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references (5)

External citations — patches, advisories, analysis.

scry

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