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01 Record

CVE-2023-36849

Junos OS and Junos OS Evolved: The l2cpd will crash when a malformed LLDP packet is received

MediumPUBLISHEDCNA: juniper
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

02 Description

Junos OS and Junos OS Evolved: The l2cpd will crash when a malformed LLDP packet is received

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
0.30% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 22.8% of scored records. A rank, not a probability.
NVD base score
6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:A/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
2023-07-14 17:58Z3 YR AGO
Last updated
2024-10-22 14:18Z2 YR AGO
Reserved
2023-06-27
Assigning CNA
juniper
Record state
PUBLISHED
Severity
Medium (CVSS 6.5)
CNA CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-703Improper Check or Handling of Exceptional ConditionsPillar
Data version
5.1
Document digest
5eda9262c96b7b44baac1916498cfd485d9ee8b3c206d13ec8b723d5ba9b189e

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS21.4 to < 21.4R3-S3, 22.1 to < 22.1R3-S3, 22.2 to < 22.2R2-S1, 22.2R3, 22.3 to < 22.3R2—
Juniper NetworksJunos OS Evolved21.4 to < 21.4R3-S2-EVO, 22.1 to < 22.1R3-S3-EVO, 22.2 to < 22.2R2-S1-EVO, 22.2R3-EVO, 22.3 to < 22.3R2-EVO—

06 References

07 Remediation

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