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01 Record

CVE-2024-30410

Junos OS: EX4300 Series: Loopback filter not blocking traffic despite having discard term.

MediumPUBLISHEDCNA: juniper
CNA base score6.9 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N

02 Description

Junos OS: EX4300 Series: Loopback filter not blocking traffic despite having discard term.

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.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • 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
0.36% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 29.8% of scored records. A rank, not a probability.
NVD base score
6.9 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/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:X/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
2024-04-12 15:02Z2 YR AGO
Last updated
2024-08-02 01:32Z2 YR AGO
Reserved
2024-03-26
Assigning CNA
juniper
Record state
PUBLISHED
Severity
Medium (CVSS 6.9)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
Weaknesses
  • CWE-696Incorrect Behavior OrderClass
Data version
5.1
Document digest
cbc46d9265599a737159ac815150818d7225a13bbfea151a2ec932a7ac677867

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos0 to < 20.4R3-S10, 21.2 to < 21.2R3-S7, 21.4 to < 21.4R3-S6EX4300
juniperjunos21.2 to < 21.2r3-s7, 21.4 to < 21.4r3-s6, 0 to < 20.4r3-s10—

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS: 20.4R3-S10, 21.2R3-S7, 21.4R3-S6, and all subsequent releases.