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01 Record

CVE-2024-21595

Junos OS: EX4100, EX4400, EX4600, QFX5000 Series: A high rate of specific ICMP traffic will cause the PFE to hang

HighPUBLISHEDCNA: juniper
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

02 Description

Junos OS: EX4100, EX4400, EX4600, QFX5000 Series: A high rate of specific ICMP traffic will cause the PFE to hang

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
0.53% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 45.0% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. 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
2024-01-12 00:52Z2 YR AGO
Last updated
2024-09-03 18:13Z2 YR AGO
Reserved
2023-12-27
Assigning CNA
juniper
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-1286Improper Validation of Syntactic Correctness of InputBase
Data version
5.1
Document digest
b410afa0c655c90797d5c68f6e18000c49067bff005cf6d2764f7d8ee075fc7f

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS21.4R3 to < 21.4R3-S4, 22.1R3 to < 22.1R3-S3, 22.2R2 to < 22.2R3-S1, 22.3 to < 22.3R2-S2, 22.3R3, 22.4 to < 22.4R2, 23.1 to < 23.1R2EX4100, EX4400, EX4600, QFX5000 Series
juniperjunos21.4R3 to < 21.4R3-S4, 22.1R3 to < 22.1R3-S3, 22.2R2 to < 22.2R3-S1, 22.3 to < 22.3R2-S2, 22.3 to < 22.3R3, 22.4 to < 22.4R2, 23.1 to < 23.1R2—

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS 21.4R3-S4, 22.1R3-S3, 22.2R3-S1, 22.3R2-S2, 22.3R3, 22.4R2, 23.1R2, 23.2R1, and all subsequent releases.