CVE-2025-59961

DHCP service takeover via world-writable control socket

Published Jan 15, 2026 · Updated Jan 15, 2026

Incorrect socket permissions in Juniper Networks Junos OS and Junos OS Evolved allow local users to take over the DHCP service. The jdhcpd management Unix socket is world-writable, so any logged-in low-privileged account can connect and issue DHCP server or relay commands. This grants administrative control over the local DHCP service; operating-system-wide privilege escalation has not been reported.

CVSS severity6.8
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect socket permissions in Juniper Networks Junos OS and Junos OS Evolved allow local users to take over the DHCP service. The jdhcpd management Unix socket is world-writable, so any logged-in low-privileged account can connect and issue DHCP server or relay commands. This grants administrative control over the local DHCP service; operating-system-wide privilege escalation has not been reported.

The record

CVE
CVE-2025-59961
Published
Jan 15, 2026
Updated
Jan 15, 2026
Vendor
Juniper Networks
Product
Junos OS Evolved
Classifications
CWE-732, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 15, 2026Record 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 <22.4R3-S8-EVO
  2. Affected versionversion=23.2 <23.2R2-S5-EVO
  3. Affected versionversion=23.4 <23.4R2-S6-EVO
  4. Affected versionversion=24.2 <24.2R2-S2-EVO
  5. Affected versionversion=24.4 <24.4R2-EVO
  6. Affected versionversion=25.2 <25.2R1-S1-EVO, 25.2R2-EVO

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Juniper Networks · Junos OS Evolvedversion=0 <22.4R3-S8-EVO; version=23.2 <23.2R2-S5-EVO; version=23.4 <23.4R2-S6-EVO; version=24.2 <24.2R2-S2-EVO; version=24.4 <24.4R2-EVO; version=25.2 <25.2R1-S1-EVO, 25.2R2-EVO
Juniper Networks · Junos OSversion=0 <21.2R3-S10; version=21.4 <21.4R3-S12; version=22.2 <22.2*; version=22.4 <22.4R3-S8; version=23.2 <23.2R2-S5; version=23.4 <23.4R2-S6; version=24.2 <24.2R2-S2; version=24.4 <24.4R2; version=25.2 <25.2R1-S1, 25.2R2

Published CVSS scores

5.5Juniper NetworksCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
6.8Juniper NetworksCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:L/SA:L

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-732Incorrect Permission Assignment for Critical Resource
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

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Your stack

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