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01 Record

CVE-2025-30646

Junos OS and Junos OS Evolved: Receipt of a malformed LLDP TLV results in l2cpd crash

HighPUBLISHEDCNA: juniper
CNA base score7.1 CVSS v4.0CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M

02 Description

Junos OS and Junos OS Evolved: Receipt of a malformed LLDP TLV results in l2cpd crash

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 15.6% of scored records. A rank, not a probability.
NVD base score
7.1 (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: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:Y/R:A/V:C/RE:M/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 19:53Z1 YR AGO
Last updated
2025-04-09 20:39Z1 YR AGO
Reserved
2025-03-24
Assigning CNA
juniper
Record state
PUBLISHED
Severity
High (CVSS 7.1)
CNA CVSS vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M
Weaknesses
  • CWE-195Signed to Unsigned Conversion ErrorVariant
Data version
5.1
Document digest
f46b0b318e611e644f7d70fc0fef923b18b07764c76017cc3fafdf548a082cb7

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS0 to < 21.2R3-S9, 21.4 to < 21.4R3-S10, 22.2 to < 22.2R3-S6, 22.4 to < 22.4R3-S6, 23.2 to < 23.2R2-S3, 23.4 to < 23.4R2-S4, 24.2 to < 24.2R2—
Juniper NetworksJunos OS Evolved0 to < 21.4R3-S10-EVO, 22.2-EVO to < 22.2R3-S6-EVO, 22.4-EVO to < 22.4R3-S6-EVO, 23.2-EVO to < 23.2R2-S3-EVO, 23.4-EVO to < 23.4R2-S4-EVO, 24.2-EVO to < 24.2R2-EVO—

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS: 21.2R3-S9, 21.4R3-S10, 22.2R3-S6, 22.4R3-S6, 23.2R2-S3, 23.4R2-S4, 24.2R2, 24.4R1, and all subsequent releases. Junos OS Evolved: 21.4R3-S10-EVO, 22.2R3-S6-EVO, 22.4R3-S6-EVO, 23.2R2-S3-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R1-EVO, and all subsequent releases.