CVE-2024-39544

Sensitive file disclosure via permissive trace permissions

Published Oct 11, 2024 · Updated Oct 11, 2024

Incorrect default permissions in Juniper Networks Junos OS Evolved allow local users to read sensitive NETCONF traceoptions files. When NETCONF tracing is configured, the CLI creates its traceoptions files with group permissions that expose their contents to low-privileged accounts. Exploitation requires local low-privileged access and an enabled NETCONF traceoptions configuration, and it exposes recorded system information without altering it.

CVSS severity5.1
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect default permissions in Juniper Networks Junos OS Evolved allow local users to read sensitive NETCONF traceoptions files. When NETCONF tracing is configured, the CLI creates its traceoptions files with group permissions that expose their contents to low-privileged accounts. Exploitation requires local low-privileged access and an enabled NETCONF traceoptions configuration, and it exposes recorded system information without altering it.

The record

CVE
CVE-2024-39544
Published
Oct 11, 2024
Updated
Oct 11, 2024
Vendor
Juniper Networks
Product
Junos OS Evolved
Classifications
CWE-276, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 11, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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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-EVO
  2. Affected versionversion=21.2-EVO <21.2R3-S7-EVO
  3. Affected versionversion=21.4-EVO <21.4R3-S5-EVO
  4. Affected versionversion=22.1-EVO <22.1R3-S5-EVO
  5. Affected versionversion=22.2-EVO <22.2R3-S3-EVO
  6. Affected versionversion=22.3-EVO <22.3R3-S2-EVO
  7. Affected versionversion=22.4-EVO <22.4R3-EVO
  8. Affected versionversion=23.2-EVO <23.2R1-S2-EVO, 23.2R2-EVO

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

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

Published CVSS scores

5.1Juniper Networks, Inc.CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
5.0Juniper Networks, Inc.CVSS:3.1/AV:L/AC:L/PR:L/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.

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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-276Incorrect Default Permissions
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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