CVE-2025-21596

mediumpriority · track · 0EPSS 0.002 · 4 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.15% (4th) EPSS

CVSS 5.5 · medium

Is it mine?

21 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

An Improper Handling of Exceptional Conditions vulnerability in the command-line processing of Juniper Networks Junos OS on SRX1500, SRX4100, and SRX4200 devices allows a local, low-privileged authenticated attacker executing the 'show chassis environment pem' command to cause the chassis daemon (chassisd) to crash and restart, resulting in a temporary Denial of Service (DoS). However, repeated execution of this command will eventually cause the chassisd process to fail to restart, impacting packet processing on the system. This issue affects Junos OS on SRX1500, SRX4100, SRX4200: * All versions before 21.4R3-S9, * from 22.2 before 22.2R3-S5, * from 22.3 before 22.3R3-S4, * from 22.4 before 22.4R3-S4, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S1.

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

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/AU:N/R:U/RE:Msecondary · 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:N/R:U/V:X/RE:M/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:N/R:U/V:X/RE:M/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-755USCWE-755US

affected products (21)

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 Networks Junos OS0 → 21.4R3-S9enisa_euvdEU
Juniper Networks Junos OS22.2 → 22.2R3-S5enisa_euvdEU
Juniper Networks Junos OS22.3 → 22.3R3-S4enisa_euvdEU
Juniper Networks Junos OS22.4 → 22.4R3-S4enisa_euvdEU
Juniper Networks Junos OS23.2 → 23.2R2-S3enisa_euvdEU
Juniper Networks Junos OS23.4 → 23.4R2-S1enisa_euvdEU
Juniper Networks Inc. JunOS≤ 21.4R3-S9fstec_bduRU
Juniper Networks Inc. JunOS22.2 → 22.2R3-S5fstec_bduRU
Juniper Networks Inc. JunOS22.3 → 22.3R3-S4fstec_bduRU
Juniper Networks Inc. JunOS22.4 → 22.4R3-S4fstec_bduRU
Juniper Networks Inc. JunOS23.2 → 23.2R2-S3fstec_bduRU
Juniper Networks Inc. JunOS23.4 → 23.4R2-S1fstec_bduRU
juniper junos< 21.4nvdUScpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
juniper junos= 21.4nvdUScpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
juniper junos= 22.2nvdUScpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
juniper junos= 22.3nvdUScpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
juniper junos= 22.4nvdUScpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*
juniper junos= 23.2nvdUScpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:*

showing 20 of 21

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-0031Juniper JUNOS: Mehrere Schwachstellen ermöglichen Denial of Service und InformationsoffenlegungDeutsch2025-01-08csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS ausnutzen, um einen Denial of Service Angriff durchzuführen und um vertrauliche Informationen preiszugeben.

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 2025-01-09modified 2026-06-17

references (4)

External citations — patches, advisories, analysis.

scry

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