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01 Record

CVE-2025-21597

Junos OS and Junos OS Evolved: When BGP rib-sharding and update-threading are configured and a peer flaps, an rpd core is observed

MediumPUBLISHEDCNA: juniper
CNA base score6.0 CVSS v4.0CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A

02 Description

Junos OS and Junos OS Evolved: When BGP rib-sharding and update-threading are configured and a peer flaps, an rpd core is observed

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
0.24% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 15.8% of scored records. A rank, not a probability.
NVD base score
6.0 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/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:X/R:A/V:X/RE:X/U:X
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
2025-04-09 19:50Z1 YR AGO
Last updated
2025-04-10 13:12Z1 YR AGO
Reserved
2024-12-26
Assigning CNA
juniper
Record state
PUBLISHED
Severity
Medium (CVSS 6.0)
CNA CVSS vector
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/R:A
Weaknesses
  • CWE-754Improper Check for Unusual or Exceptional ConditionsClass
Data version
5.1
Document digest
08e47270358f5a16fd041d9d43c7268fd6981856d7e6b0fdd37f7537c140aa6a

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS0 to < 20.4R3-S8, 21.2 to < 21.2R3-S6, 21.3 to < 21.3R3-S5, 21.4 to < 21.4R3-S4, 22.1 to < 22.1R3-S3, 22.2 to < 22.2R3-S1, 22.3 to < 22.3R3, 22.4 to < 22.4R3—
Juniper NetworksJunos OS Evolved0 to < 21.2R3-S6-EVO, 21.3-EVO to < 21.3R3-S5-EVO, 21.4-EVO to < 21.4R3-S4-EVO, 22.1-EVO to < 22.1R3-S3-EVO, 22.2-EVO to < 22.2R3-S1-EVO, 22.3-EVO to < 22.3R3-EVO, 22.4-EVO to < 22.4R3-EVO—

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS: 20.4R3-S8, 21.2R3-S6, 21.3R3-S5, 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R3, 22.4R3, 23.2R1, and all subsequent releases. Junos OS Evolved: 21.2R3-S6-EVO, 21.3R3-S5-EVO, 21.4R3-S4-EVO, 22.1R3-S3-EVO, 22.2R3-S1-EVO, 22.3R3-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases.