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01 Record

CVE-2021-31357

Junos OS Evolved: shell-injection vulnerabilities in evo_tcpdump UI wrapper script

HighPUBLISHEDCNA: juniper
CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

02 Description

Junos OS Evolved: shell-injection vulnerabilities in evo_tcpdump UI wrapper script

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
0.63% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 50.1% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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
2021-10-19 18:16Z5 YR AGO
Last updated
2024-09-17 02:16Z2 YR AGO
Reserved
2021-04-15
Assigning CNA
juniper
Record state
PUBLISHED
Severity
High (CVSS 7.8)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')Class
  • CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base
Data version
5.1
Document digest
0e3dfbf51aa7fb35e655959ac216008837d87c43041e36c6677e3ae3250e94e5

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS Evolved< 20.3R2-S1-EVO, 20.4 to < 20.4R2-S2-EVO, 21.1 to < 21.1R2-EVO, 21.2 to < 21.2R1-S1-EVO, 21.2R2-EVO—

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: Junos OS Evolved 20.3R2-S1-EVO, 20.4R2-S2-EVO, 21.1R2-EVO, 21.2R1-S1-EVO, 21.2R2-EVO, 21.3R1-EVO, and all subsequent releases.