01 Record
CVE-2020-1638
Junos OS & Junos OS Evolved: A specific IPv4 packet can lead to FPC restart.
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 & Junos OS Evolved: A specific IPv4 packet can lead to FPC restart.
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
- 1.32% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 70.2% 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
- 2024-09-17 02:53Z2 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-467Use of sizeof() on a Pointer TypeVariant
- Data version
- 5.1
- Document digest
- 15738c5d4a207426401f1ef6b5c068c569a6f7a9a4fc979b58efa446982ca708
05 Affected products
VendorProductVersionsPlatforms
Juniper NetworksJunos OS19.2 to < 19.2R1-S4, 19.2R2, 19.3 to < 19.3R2-S2, 19.3R3, 19.4 to < 19.4R1-S1, 19.4R2MX Series with MPC10E or MPC11E and PTX10001
Juniper NetworksJunos OS Evolved19.2-EVO, 19.3-EVO 19.2-EVO, 19.4-EVO to < 19.4R2-EVOQFX5220, and PTX10003 series
06 References
- kb.juniper.nethttps://kb.juniper.net/JSA11019
07 Remediation
The following software releases have been updated to resolve this specific issue: Junos OS: 19.2R1-S4, 19.2R2, 19.3R2-S2, 19.3R3, 19.4R1-S1, 19.4R2, 20.1R1, and all subsequent releases. Junos OS Evolved: 19.4R2-EVO, 20.1R1-EVO, and all subsequent releases.