CVE-2020-1606Network attack vector

Authenticated file read and deletion via path traversal

Published Jan 15, 2020 · Updated Sep 17, 2024

Path traversal in J-Web in Juniper Networks Junos OS allows remote authenticated users to read or delete accessible files. Juniper has not published the affected J-Web handler or how it fails to restrict attacker-controlled path components. J-Web must be enabled and the attacker must authenticate; reads are limited to world-readable files and deletion to world-writable files.

CVSS severity5.4
Medium
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in J-Web in Juniper Networks Junos OS allows remote authenticated users to read or delete accessible files. Juniper has not published the affected J-Web handler or how it fails to restrict attacker-controlled path components. J-Web must be enabled and the attacker must authenticate; reads are limited to world-readable files and deletion to world-writable files.

The record

CVE
CVE-2020-1606
Published
Jan 15, 2020
Updated
Sep 17, 2024
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-22, T1070.004, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=12.3 <12.3R12-S13
  2. Affected versionversion=12.3X48 <12.3X48-D85
  3. Affected versionversion=14.1X53 <14.1X53-D51
  4. Affected versionversion=15.1 <15.1R7-S5
  5. Affected versionversion=15.1F6 <15.1F6-S13
  6. Affected versionversion=15.1X49 <15.1X49-D180
  7. Affected versionversion=15.1X53 <15.1X53-D238
  8. Affected versionversion=15.1X53 <15.1X53-D592
  9. Affected versionversion=16.1 <16.1R4-S13, 16.1R7-S5
  10. Affected versionversion=16.2 <16.2R2-S10
  11. Affected versionversion=17.1 <17.1R3-S1
  12. Affected versionversion=17.2 <17.2R1-S9, 17.2R3-S2
  13. Affected versionversion=17.3 <17.3R2-S5, 17.3R3-S5
  14. Affected versionversion=17.4 <17.4R2-S9, 17.4R3
  15. Affected versionversion=18.1 <18.1R3-S8
  16. Affected versionversion=18.2 <18.2R3
  17. Affected versionversion=18.3 <18.3R2-S3, 18.3R3
  18. Affected versionversion=18.4 <18.4R2
  19. Affected versionversion=19.1 <19.1R1-S4, 19.1R2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Juniper Networks · Junos OSversion=12.3 <12.3R12-S13; version=12.3X48 <12.3X48-D85; version=14.1X53 <14.1X53-D51; version=15.1 <15.1R7-S5; version=15.1F6 <15.1F6-S13; version=15.1X49 <15.1X49-D180; version=15.1X53 <15.1X53-D238; version=15.1X53 <15.1X53-D592; version=16.1 <16.1R4-S13, 16.1R7-S5; version=16.2 <16.2R2-S10; version=17.1 <17.1R3-S1; version=17.2 <17.2R1-S9, 17.2R3-S2; version=17.3 <17.3R2-S5, 17.3R3-S5; version=17.4 <17.4R2-S9, 17.4R3; version=18.1 <18.1R3-S8; version=18.2 <18.2R3; version=18.3 <18.3R2-S3, 18.3R3; version=18.4 <18.4R2; version=19.1 <19.1R1-S4, 19.1R2

Published CVSS scores

5.4Juniper Networks, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1070.004File Deletion
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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