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01 Record

CVE-2021-31384

Junos OS: SRX Series: Under a specific device configuration an attacker can access the devices J-Web management services from any interface, regardless of security settings protecting the service

HighPUBLISHEDCNA: juniper
CNA base score7.2 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
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02 Description

Junos OS: SRX Series: Under a specific device configuration an attacker can access the devices J-Web management services from any interface, regardless of security settings protecting the service

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
1.16% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 67.0% of scored records. A rank, not a probability.
NVD base score
10.0 (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:C/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 18:17Z5 YR AGO
Last updated
2024-09-16 17:37Z2 YR AGO
Reserved
2021-04-15
Assigning CNA
juniper
Record state
PUBLISHED
Severity
High (CVSS 7.2)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Weaknesses
  • CWE-285Improper AuthorizationClass
  • CWE-551Incorrect Behavior Order: Authorization Before Parsing and CanonicalizationBase
  • CWE-862Missing AuthorizationClass
  • CWE-939Improper Authorization in Handler for Custom URL SchemeBase
  • CWE-1220Insufficient Granularity of Access ControlBase
Data version
5.1
Document digest
877b5078b7147d71e7ebaa289d4c6dab8758bf332d499887532f28968a1f4474

05 Affected products

VendorProductVersionsPlatforms
Juniper NetworksJunos OS20.4R1 to < 20.4*, 21.1 to < 21.1R1-S1, 21.1R2SRX Series

06 References

07 Remediation

The following software releases have been updated to resolve this specific issue: 20.4R2-S1, 20.4R3, 21.1R1-S1, 21.1R2, 21.2R1, and all subsequent releases.