synced JUST NOW
01 Record

CVE-2020-1639

Junos OS: A crafted Ethernet OAM packet received by Junos may cause the Ethernet OAM connectivity fault management process (CFM) to core.

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: A crafted Ethernet OAM packet received by Junos may cause the Ethernet OAM connectivity fault management process (CFM) to core.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
1.09% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 65.2% 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
2020-04-08 19:26Z6 YR AGO
Last updated
2024-09-16 22:02Z2 YR AGO
Reserved
2019-11-04
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-703Improper Check or Handling of Exceptional ConditionsPillar
  • CWE-755Improper Handling of Exceptional ConditionsClass
Data version
5.1
Document digest
7887038ce5586b45c3aea55173479f52049b5a41676b8dd14c8d6c53ed048e66

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS12.3 to < 12.3R12-S15, 14.1X50 to < 14.1X50-D145, 14.1X53 to < 14.1X53-D47, 15.1 to < 15.1R2, 15.1X53 to < 15.1X53-D67, 12.3X48 to < 12.3X48-D95, 15.1X49 to < 15.1X49-D170SRX Series

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: 12.3R12-S15, 12.3X48-D95, 14.1X50-D145, 14.1X53-D47, 15.1R2, 15.1X49-D170, 16.1R1, and all subsequent releases.