CVE-2020-1606: A path traversal vulnerability in the Juniper Networks Junos OS device may allow an authenticated J-web user to read files with 'world' readable permi...

Description

A path traversal vulnerability in the Juniper Networks Junos OS device may allow an authenticated J-web user to read files with 'world' readable permission and delete files with 'world' writeable permission. This issue does not affect system files that can be accessed only by root user. This issue affects Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S13; 12.3X48 versions prior to 12.3X48-D85 on SRX Series; 14.1X53 versions prior to 14.1X53-D51; 15.1F6 versions prior to 15.1F6-S13; 15.1 versions prior to 15.1R7-S5; 15.1X49 versions prior to 15.1X49-D180 on SRX Series; 15.1X53 versions prior to 15.1X53-D238 on QFX5200/QFX5110 Series; 16.1 versions prior to 16.1R4-S13, 16.1R7-S5; 16.2 versions prior to 16.2R2-S10; 17.1 versions prior to 17.1R3-S1; 17.2 versions prior to 17.2R1-S9, 17.2R3-S2; 17.3 versions prior to 17.3R2-S5, 17.3R3-S5; 17.4 versions prior to 17.4R2-S9, 17.4R3; 18.1 versions prior to 18.1R3-S8; 18.2 versions prior to 18.2R3; 18.3 versions prior to 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R2; 19.1 versions prior to 19.1R1-S4, 19.1R2.

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.93%

56.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions	Update
Juniper	Junos	12.3	—
Juniper	Junos	14.1x53	—
Juniper	Junos	15.1	F6
Juniper	Junos	16.1	—
Juniper	Junos	16.2	—
Juniper	Junos	17.1	—
Juniper	Junos	17.2	—
Juniper	Junos	17.4	—
Juniper	Junos	18.1	—
Juniper	Junos	18.2	—
Juniper	Junos	18.3	—
Juniper	Junos	18.4	—
Juniper	Junos	19.1	R1
Juniper	Junos	12.3x48	D10
Juniper	Junos	15.1x49	D10
Juniper	Junos	15.1x53	D20

References

https://kb.juniper.net/JSA10985Vendor Advisory
https://kb.juniper.net/JSA10985Vendor Advisory

Timeline

Published: Jan 15, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-1606?

A path traversal vulnerability in the Juniper Networks Junos OS device may allow an authenticated J-web user to read files with 'world' readable permission and delete files with 'world' writeable permission. This issue does not affect system files that can be accessed only by root user. This issue affects Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S13; 12.3X48 versions prior to 12.3X48-D85 on SRX Series; 14.1X53 versions prior to 14.1X53-D51; 15.1F6 versions prior to 15.1F6-S13; 15.1 versions prior to 15.1R7-S5; 15.1X49 versions prior to 15.1X49-D180 on SRX Series; 15.1X53 versions prior to 15.1X53-D238 on QFX5200/QFX5110 Series; 16.1 versions prior to 16.1R4-S13, 16.1R7-S5; 16.2 versions prior to 16.2R2-S10; 17.1 versions prior to 17.1R3-S1; 17.2 versions prior to 17.2R1-S9, 17.2R3-S2; 17.3 versions prior to 17.3R2-S5, 17.3R3-S5; 17.4 versions prior to 17.4R2-S9, 17.4R3; 18.1 versions prior to 18.1R3-S8; 18.2 versions prior to 18.2R3; 18.3 versions prior to 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R2; 19.1 versions prior to 19.1R1-S4, 19.1R2.

How severe is CVE-2020-1606?

CVE-2020-1606 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.93% probability of exploitation in the next 30 days.

How do I fix CVE-2020-1606?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.