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01 Record

CVE-2021-0217

Junos OS: EX Series and QFX Series: Memory leak issue processing specific DHCP packets

HighPUBLISHEDCNA: juniper
CNA base score7.4 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
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02 Description

Junos OS: EX Series and QFX Series: Memory leak issue processing specific DHCP packets

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
0.73% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 54.1% of scored records. A rank, not a probability.
NVD base score
7.4 (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:C/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
2021-01-15 17:35Z5 YR AGO
Last updated
2024-09-17 02:06Z2 YR AGO
Reserved
2020-10-27
Assigning CNA
juniper
Record state
PUBLISHED
Severity
High (CVSS 7.4)
CNA CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weaknesses
  • CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
  • CWE-770Allocation of Resources Without Limits or ThrottlingBase
Data version
5.1
Document digest
5de62d4fb4f87450fdb84750a919d3268fc764090e06ff531fa16b96926b0167

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS17.4 to < 17.4R3-S3, 18.1R3-S6 to < 18.1*, 18.2R3 to < 18.2*, 18.3R3 to < 18.3*, 18.4R2 to < 18.4*, 19.1R2 to < 19.1*, 19.2 to < 19.2R3-S1, 19.3 to < 19.3R2-S5, 19.3R3, 19.4 to < 19.4R2-S2, 19.4R3, 20.1 to < 20.1R2, 20.2 to < 20.2R1-S2, 20.2R2EX Series, QFX Series

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS 17.4R3-S3, 18.1R3-S11, 18.2R3-S6, 18.3R3-S4, 18.4R2-S5, 18.4R2-S7, 18.4R3-S6, 19.1R1-S6, 19.1R3-S3, 19.2R3-S1, 19.3R2-S5, 19.3R3, 19.4R2-S2, 19.4R3, 20.1R2, 20.2R1-S2, 20.2R2, 20.3R1, and all subsequent releases.