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01 Record

CVE-2023-36841

Junos OS: MX Series: Receipt of malformed TCP traffic will cause a Denial of Service

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: MX Series: Receipt of malformed TCP traffic will cause a Denial of Service

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
0.61% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 49.3% 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
2023-10-12 22:58Z3 YR AGO
Last updated
2024-09-18 18:01Z2 YR AGO
Reserved
2023-06-27
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-400Uncontrolled Resource ConsumptionClass
Data version
5.1
Document digest
ee19f51afcf8f4d14e754d9df04e7385d9a692c674316c36aa696a76abd2f1c5

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS0 to < 20.4R3-S7, 21.1R1 to < 21.1*, 21.2 to < 21.2R3-S6, 21.3 to < 21.3R3-S5, 21.4 to < 21.4R3-S3, 22.1 to < 22.1R3-S4, 22.2 to < 22.2R3, 22.3 to < 22.3R2-S2, 22.3R3, 22.4 to < 22.4R2MX Series
juniper_networksjunos_os0 to < 20.4r3-s7, 21.1r1 to < 21.1, 21.2 to < 21.2r3-s6, 21.3 to < 21.3r3-s5, 21.4 to < 21.4r3-s3, 22.1 to < 22.1r3-s4, 22.2 to < 22.2r3, 22.3 to < 22.3r2-s2, 22.3 to < 22.3r3, 22.4 to < 22.4r2—

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS 20.4R3-S7, 21.2R3-S6, 21.4R3-S3, 22.1R3-S4, 22.2R3, 22.3R2-S2, 22.3R3, 22.4R2, 23.2R1, and all subsequent releases.