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01 Record

CVE-2024-30389

Junos OS: EX4300 Series: Firewall filter not blocking egress traffic

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: Firewall filter not blocking egress traffic

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 15:24Z2 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
c70b70d4b0fb239d110aef53f11f9ab59d0f23dc0a18eda9bd59abacb371b9e1

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS21.4 to < 21.4R3-S6EX4300 Series
juniperjunos21.4 to < 21.4r3-s6—

06 References

07 Remediation

The following software release has been updated to resolve this specific issue: 21.4R3-S6, and all subsequent releases of this branch.