01 Record

CVE-2021-0273

Junos OS and Junos OS Evolved: Trio Chipset: Denial of Service due to packet destined to device's interfaces.

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 and Junos OS Evolved: Trio Chipset: Denial of Service due to packet destined to device's interfaces.

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: 1.00% probability of exploitation activity in the next 30 days.
EPSS percentile: Equal to or higher than the score of 62.5% 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

2021-04-22 19:37Z5 YR AGO

Last updated

2024-09-17 00:26Z2 YR AGO

Reserved

2020-10-27

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

CWE-670Always-Incorrect Control Flow ImplementationClass
CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')Base

Data version

5.1

Document digest

2b89ec709d39233335a0a2713a75709cf3b500de4d6ec301b80e8cffbfaac1de

05 Affected products

VendorProductVersionsPlatforms

Juniper NetworksJunos OS15.1F6 to < 15.1*, 16.1R1 to < 16.1*, 17.1 to < 17.1R2-S12, 17.2 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 < 18.2R2-S7, 18.2R3-S3, 18.3 to < 18.3R1-S7, 18.3R3-S2, 18.4 to < 18.4R1-S7, 18.4R2-S4, 18.4R3-S2, 19.1 to < 19.1R1-S5, 19.1R2-S1, 19.1R3, 19.2 to < 19.2R1-S4, 19.2R2, 19.3 to < 19.3R2-S3, 19.3R3, 19.4 to < 19.4R1-S1, 19.4R2ACX5800, EX9200 Series, MX10000 Series, MX240, MX480, MX960

Juniper NetworksJunos OS Evolved19.4 to < 19.4R2-EVOACX5800, EX9200 Series, MX10000 Series, MX240, MX480, MX960

06 References

kb.juniper.nethttps://kb.juniper.net/JSA11164x_refsource_MISC

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS: 16.1R7-S8, 17.1R2-S12, 17.2R3-S4, 17.3R3-S8, 17.4R2-S10, 17.4R3-S2, 18.1R3-S10, 18.2R2-S7, 18.2R3-S3, 18.3R1-S7, 18.3R3-S2, 18.4R1-S7, 18.4R2-S4, 18.4R3-S2, 19.1R1-S5, 19.1R2-S1, 19.1R3, 19.2R1-S4, 19.2R2, 19.3R2-S3, 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.