CVE-2025-59961

Junos OS and Junos OS Evolved: Unix socket used to control the jdhcpd process is world-writable

MEDIUM

5.5

CVSS Score

Published: January 15, 2026 at 08:14 PM UTC

Updated: June 17, 2026 at 09:46 AM UTC

3 products affected across 2 vendorsJunosJunos OS EvolvedJunos OS Evolved

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.1%

SSVC

No known exploit

Description

An Incorrect Permission Assignment for Critical Resource vulnerability in the Juniper DHCP daemon (jdhcpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged user to write to the Unix socket used to manage the jdhcpd process, resulting in complete control over the resource. This vulnerability allows any low-privileged user logged into the system to connect to the Unix socket and issue commands to manage the DHCP service, in essence, taking administrative control of the local DHCP server or DHCP relay. This issue affects: Junos OS: * all versions before 21.2R3-S10, * all versions of 22.2, * from 21.4 before 21.4R3-S12, * from 22.4 before 22.4R3-S8, * from 23.2 before 23.2R2-S5, * from 23.4 before 23.4R2-S6, * from 24.2 before 24.2R2-S2, * from 24.4 before 24.4R2, * from 25.2 before 25.2R1-S1, 25.2R2; Junos OS Evolved: * all versions before 22.4R3-S8-EVO, * from 23.2 before 23.2R2-S5-EVO, * from 23.4 before 23.4R2-S6-EVO, * from 24.2 before 24.2R2-S2-EVO, * from 24.4 before 24.4R2-EVO, * from 25.2 before 25.2R1-S1-EVO, 25.2R2-EVO.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Junos · Juniper Networks

95%

v < 21.2v < 21.2R3-S1021.4 ≤ v < 21.4R3-S1222.2 ≤ v < 22.2*22.4 ≤ v < 22.4R3-S823.2 ≤ v < 23.2R2-S523.4 ≤ v < 23.4R2-S624.2 ≤ v < 24.2R2-S224.4 ≤ v < 24.4R225.2 ≤ v < 25.2R1-S1, 25.2R221.2 21.2 r1 21.2 r1-s1 21.2 r1-s2 21.2 r2 21.2 r2-s1 21.2 r2-s2 21.2 r3 21.2 r3-s1 21.2 r3-s2 21.2 r3-s3 21.2 r3-s4 21.2 r3-s5 21.2 r3-s6 21.2 r3-s7 21.2 r3-s8 21.2 r3-s9 21.4 21.4 r1 21.4 r1-s1 21.4 r1-s2 21.4 r2 21.4 r2-s1 21.4 r2-s2 21.4 r3 21.4 r3-s1 21.4 r3-s10 21.4 r3-s11 21.4 r3-s2 21.4 r3-s3 21.4 r3-s4 21.4 r3-s5 21.4 r3-s6 21.4 r3-s7 21.4 r3-s8 21.4 r3-s9 22.2 22.4 22.4 r1 22.4 r1-s1 22.4 r1-s2 22.4 r2 22.4 r2-s1 22.4 r2-s2 22.4 r3 22.4 r3-s1 22.4 r3-s2 22.4 r3-s3 22.4 r3-s4 22.4 r3-s5 22.4 r3-s6 22.4 r3-s7 23.2 23.2 r1 23.2 r1-s1 23.2 r1-s2 23.2 r2 23.2 r2-s1 23.2 r2-s2 23.2 r2-s3 23.2 r2-s4 23.4 23.4 r1 23.4 r1-s1 23.4 r1-s2 23.4 r2 23.4 r2-s1 23.4 r2-s2 23.4 r2-s3 23.4 r2-s4 23.4 r2-s5 24.2 24.2 r1 24.2 r1-s1 24.2 r1-s2 24.2 r2 24.2 r2-s1 24.4 24.4 r1 24.4 r1-s2 24.4 r1-s3 25.2 25.2 r1 25.2 r2

Affected range stops below 21.2R3-S10, so it looks safe — our inference, not a vendor statement

Affected range stops below 21.4R3-S12, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.2*, so it looks safe — our inference, not a vendor statement

Affected range stops below 22.4R3-S8, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.2R2-S5, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.4R2-S6, so it looks safe — our inference, not a vendor statement

Affected range stops below 24.2R2-S2, so it looks safe — our inference, not a vendor statement

Affected range stops below 24.4R2, so it looks safe — our inference, not a vendor statement

Affected range stops below 25.2R1-S1, 25.2R2, so it looks safe — our inference, not a vendor statement

Junos OS Evolved · Juniper Networks

60%

v < 22.4R3-S8-EVO23.2 ≤ v < 23.2R2-S5-EVO23.4 ≤ v < 23.4R2-S6-EVO24.2 ≤ v < 24.2R2-S2-EVO24.4 ≤ v < 24.4R2-EVO25.2 ≤ v < 25.2R1-S1-EVO, 25.2R2-EVO23.2 23.4 24.2 24.4 25.2

Affected range stops below 22.4R3-S8-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.2R2-S5-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 23.4R2-S6-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 24.2R2-S2-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 24.4R2-EVO, so it looks safe — our inference, not a vendor statement

Affected range stops below 25.2R1-S1-EVO, 25.2R2-EVO, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory

Source: cverecord

https://supportportal.juniper.net/

Vendor Advisory

Source: cverecord

https://kb.juniper.net/JSA103150

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMjuniper

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusANALYZED

CWE

CWE-732

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