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01 Record

CVE-2025-59960

Junos OS and Junos OS Evolved: DHCP Option 82 messages from clients being passed unmodified to the DHCP server

MediumPUBLISHEDCNA: juniper
CNA base score6.3 CVSS v4.0CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:H/AU:Y/R:U/V:C/RE:M/U:Amber

02 Description

Junos OS and Junos OS Evolved: DHCP Option 82 messages from clients being passed unmodified to the DHCP server

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.25% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 16.8% of scored records. A rank, not a probability.
NVD base score
6.3 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:C/RE:M/U:Amber
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-01-15 20:14Z9 MO AGO
Last updated
2026-01-16 16:27Z9 MO AGO
Reserved
2025-09-23
Assigning CNA
juniper
Record state
PUBLISHED
Severity
Medium (CVSS 6.3)
CNA CVSS vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:H/AU:Y/R:U/V:C/RE:M/U:Amber
Weaknesses
  • CWE-754Improper Check for Unusual or Exceptional ConditionsClass
Data version
5.2
Document digest
273dc7a199fedc1b3ff9a07f5aa3f088ec13b62344053880706ff858a13b44da

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS0 to < 21.2R3-S10, 21.4 to < 21.4R3-S12, 22.2 to < 22.2*, 22.4 to < 22.4R3-S8, 23.2 to < 23.2R2-S5, 23.4 to < 23.4R2-S6, 24.2 to < 24.2R2-S2, 24.4 to < 24.4R2, 25.2 to < 25.2R1-S1, 25.2R2—
Juniper NetworksJunos OS Evolved0 to < 21.4R3-S12-EVO, 22.2 to < 22.2*, 22.4 to < 22.4R3-S8-EVO, 23.2 to < 23.2R2-S5-EVO, 23.4 to < 23.4R2-S6-EVO, 24.2 to < 24.2R2-S2-EVO, 24.4 to < 24.4R2-EVO, 25.2 to < 25.2R1-S1-EVO, 25.2R2-EVO—

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS 21.2R3-S10, 21.4R3-S12, 22.4R3-S8, 23.2R2-S5, 23.4R2-S6, 24.2R2-S2, 24.4R2, 25.2R1-S1, 25.2R2, 25.4R1, and all subsequent releases. Junos OS Evolved 21.4R3-S12-EVO, 22.4R3-S8-EVO, 23.2R2-S5-EVO, 23.4R2-S6-EVO, 24.2R2-S2-EVO, 24.4R2-EVO, 25.2R1-S1-EVO, 25.2R2-EVO, 25.4R1-EVO, and all subsequent releases.