CVE-2024-39546

Root command execution via unauthorized SI file modification

Published Jul 11, 2024 · Updated Aug 27, 2025

Junos OS Evolved allows local users with low privileges to execute arbitrary commands as root through its SI command-file interface. The interface fails to authorize modifications to certain command files, causing attacker-controlled file content to be processed as root commands. An authenticated low-privilege account and local access are required; successful exploitation fully compromises the device.

CVSS severity7.0
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Junos OS Evolved allows local users with low privileges to execute arbitrary commands as root through its SI command-file interface. The interface fails to authorize modifications to certain command files, causing attacker-controlled file content to be processed as root commands. An authenticated low-privilege account and local access are required; successful exploitation fully compromises the device.

The record

CVE
CVE-2024-39546
Published
Jul 11, 2024
Updated
Aug 27, 2025
Vendor
Juniper Networks
Product
Junos OS Evolved
Classifications
CWE-862, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <21.2R3-S8-EVO
  2. Affected versionversion=21.4 <21.4R3-S6-EVO
  3. Affected versionversion=22.1 <22.1R3-S5-EVO
  4. Affected versionversion=22.2 <22.2R3-S3-EVO
  5. Affected versionversion=22.3 <22.3R3-S3-EVO
  6. Affected versionversion=22.4 <22.4R3-EVO
  7. Affected versionversion=23.2 <23.2R2-EVO

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Juniper Networks · Junos OS Evolvedversion=0 <21.2R3-S8-EVO; version=21.4 <21.4R3-S6-EVO; version=22.1 <22.1R3-S5-EVO; version=22.2 <22.2R3-S3-EVO; version=22.3 <22.3R3-S3-EVO; version=22.4 <22.4R3-EVO; version=23.2 <23.2R2-EVO

Published CVSS scores

7.3CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
7.0Juniper NetworksCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.3Juniper NetworksCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo