01 Record

CVE-2020-1655

Junos OS: MX Series: PFE crash on MPC7/8/9 upon receipt of large packets requiring fragmentation

MediumPUBLISHEDCNA: juniper

CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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02 Description

Junos OS: MX Series: PFE crash on MPC7/8/9 upon receipt of large packets requiring fragmentation

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: 1.03% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 63.6% of scored records. A rank, not a probability.
NVD base score: 5.3 (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:L
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: 2020-07-17 18:40Z6 YR AGO
Last updated: 2024-09-16 17:38Z2 YR AGO
Reserved: 2019-11-04
Assigning CNA: juniper
Record state: PUBLISHED
Severity: Medium (CVSS 5.3)
CNA CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses: No CWE assigned
Data version: 5.1
Document digest: 0a7f8e21e866574f73bba9c3c739e1225a0fe95119bb0b2788503aa60fa4eb8b

05 Affected products

VendorProductVersionsPlatforms

Juniper NetworksJunos OS17.2 to < 17.2R3-S4, 17.3 to < 17.3R3-S8, 17.4 to < 17.4R2-S10, 17.4R3-S2, 18.1 to < 18.1R3-S10, 18.2 to < 18.2R3-S3, 18.2X75 to < 18.2X75-D41, 18.2X75-D430, 18.2X75-D65, 18.3 to < 18.3R1-S7, 18.3R2-S4, 18.3R3-S1, 18.4 to < 18.4R1-S7, 18.4R2-S4, 18.4R3, 19.1 to < 19.1R1-S5, 19.1R2-S1, 19.1R3, 19.2 to < 19.2R1-S4, 19.2R2, 19.3 to < 19.3R2-S2, 19.3R3MX Series

06 References

www.juniper.nethttps://www.juniper.net/documentation/en_US/junos/topics/topic-map/l2tp-lns-inline-service-interfaces.htmlx_refsource_MISC
kb.juniper.nethttps://kb.juniper.net/JSA11041x_refsource_CONFIRM

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS 17.2R3-S4, 17.3R3-S8, 17.4R2-S10, 17.4R3-S2, 18.1R3-S10, 18.2R3-S3, 18.2X75-D41, 18.2X75-D430, 18.2X75-D65, 18.3R1-S7, 18.3R2-S4, 18.3R3-S1, 18.4R1-S7, 18.4R2-S4, 18.4R3, 19.1R1-S5, 19.1R2-S1, 19.1R3, 19.2R1-S4, 19.2R2, 19.3R2-S2, 19.3R3, 19.4R1, 19.4R2, 20.1R1, and all subsequent releases.