CVE-2023-28966

highpriority · track · 0OT risk · elevatedEPSS 0.002 · 6 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.16% (6th) EPSS

CVSS 7.8 · high

Is it mine?

17 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

An Incorrect Default Permissions vulnerability in Juniper Networks Junos OS Evolved allows a low-privileged local attacker with shell access to modify existing files or execute commands as root. The issue is caused by improper file and directory permissions on certain system files, allowing an attacker with access to these files and folders to inject CLI commands as root. This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R3-S5-EVO; 21.2 versions prior to 21.2R3-EVO; 21.3 versions prior to 21.3R2-EVO.

cvss

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

7.8

010

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

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · sirt@juniper.net USexploitability 1.8 · impact 5.9

v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-276USCWE-276US

affected products (17)

Products and version ranges known to be affected.

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 QFX Series QFX10000all versionscert_bundDEcpe:/h:juniper:qfx:qfx10000
Juniper QFX Series QFX10002all versionscert_bundDEcpe:/h:juniper:qfx:qfx10002
Juniper SRX Seriesall versionscert_bundDEcpe:/h:juniper:srx_service_gateways:-
Juniper Networks Junos OS Evolved21.2 → 21.2R3-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved21.3 → 21.3R2-EVOenisa_euvdEU
Juniper Networks Junos OS Evolvedunspecified → 20.4R3-S5-EVOenisa_euvdEU
Juniper Networks Inc. Junos OS Evolved≤ 20.4R3-S5-EVOfstec_bduRU
Juniper Networks Inc. Junos OS Evolved21.2 → 21.2R3-EVOfstec_bduRU
Juniper Networks Inc. Junos OS Evolved21.3 → 21.3R2-EVOfstec_bduRU
juniper junos os evolved< 20.4nvdUScpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*
juniper junos os evolved= 20.4nvdUScpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*
juniper junos os evolved= 21.2nvdUScpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*
juniper junos os evolved= 21.3nvdUScpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0951Juniper Produkte: Mehrere SchwachstellenDeutsch2023-04-12csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS, Juniper QFX Series, Juniper SRX Series und Juniper MX Series ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen und Daten zu manipulieren.

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 NVD CVE.org MITRE

published 2023-04-17modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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