CVE-2024-21619Network attack vector

Configuration disclosure via guessable temporary-file requests

Published Jan 25, 2024 · Updated Jun 17, 2025

Information disclosure in J-Web for Juniper Networks Junos OS on SRX and EX Series allows remote attackers to read device configurations. J-Web writes each authenticated user's visible configuration to a temporary file under /cache, then serves that file to unauthenticated requests that guess its name. A user must first log in and create the temporary file; successful guessing discloses only the configuration content available to that user.

CVSS severity5.3
Medium
EPSS probability0.88%
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

Information disclosure in J-Web for Juniper Networks Junos OS on SRX and EX Series allows remote attackers to read device configurations. J-Web writes each authenticated user's visible configuration to a temporary file under /cache, then serves that file to unauthenticated requests that guess its name. A user must first log in and create the temporary file; successful guessing discloses only the configuration content available to that user.

The record

CVE
CVE-2024-21619
Published
Jan 25, 2024
Updated
Jun 17, 2025
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-306, CWE-209, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 17, 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 <20.4R3-S9
  2. Affected versionversion=21.2 <21.2R3-S7
  3. Affected versionversion=21.3 <21.3R3-S5
  4. Affected versionversion=21.4 <21.4R3-S6
  5. Affected versionversion=22.1 <22.1R3-S5
  6. Affected versionversion=22.2 <22.2R3-S3
  7. Affected versionversion=22.3 <22.3R3-S2
  8. Affected versionversion=22.4 <22.4R3
  9. Affected versionversion=23.2 <23.2R1-S2, 23.2R2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OSversion=0 <20.4R3-S9; version=21.2 <21.2R3-S7; version=21.3 <21.3R3-S5; version=21.4 <21.4R3-S6; version=22.1 <22.1R3-S5; version=22.2 <22.2R3-S3; version=22.3 <22.3R3-S2; version=22.4 <22.4R3; version=23.2 <23.2R1-S2, 23.2R2

Published CVSS scores

5.3Juniper NetworksCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
CWE-209Generation of Error Message Containing Sensitive Information
T1190Exploit Public-Facing Application

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