CVE-2021-0231 json
Junos OS: SRX, vSRX Series: J-Web Path traversal vulnerability in SRX and vSRX Series leads to information disclosure.
published 2021-04-22 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-2850
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
A path traversal vulnerability in the Juniper Networks SRX and vSRX Series may allow an authenticated J-web user to read sensitive system files. This issue affects Juniper Networks Junos OS on SRX and vSRX Series: 19.3 versions prior to 19.3R2-S6, 19.3R3-S1; 19.4 versions prior to 19.4R2-S4, 19.4R3; 20.1 versions prior to 20.1R1-S4, 20.1R2; 20.2 versions prior to 20.2R1-S3, 20.2R2; This issue does not affect Juniper Networks Junos OS versions prior to 19.3R1.
Patch / fix
- Juniper Networks Junos OS 19.3R2-S6, 19.3R3-S1, 19.4R2-S4, 19.4R3, 20.1R1-S4, 20.1R2, 20.2R1-S3, 20.2R2
Exploit prediction
1.23% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 6.8 | AV:N/AC:L/Au:S/C:C/I:N/A:N |
Affected products
- Juniper Networks Junos OS
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
kb.juniper.net
/JSA11126
vendor-advisory
Sources
- CVE List CVE-2021-0231
- NVD CVE-2021-0231
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