CVE-2020-36909

Name: CVE-2020-36909
Creator: NVD / NIST
Published: 2026-01-06T16:15:46.68+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.7/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2020-36909 is a high-severity vulnerability rated 8.7/10 on the CVSS scale. SnapGear Management Console SG560 3.1.5 contains a file manipulation vulnerability that allows authenticated users to read, write, and delete files using the edit_config_files CGI script. Attackers can manipulate POST request parameters in /cgi-bin/cgix/edit_config_files to access and modify files outside the intended /etc/config/ directory.. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

SnapGear Management Console SG560 3.1.5 contains a file manipulation vulnerability that allows authenticated users to read, write, and delete files using the edit_config_files CGI script. Attackers can manipulate POST request parameters in /cgi-bin/cgix/edit_config_files to access and modify files outside the intended /etc/config/ directory.

Metrics

CVSS 3.1

8.8/10

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

CVSS 4.0

8.7/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.64%

45.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Securecomputing	Snapgear Sg560 Firmware	3.1.5

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/182960Third Party Advisory
https://packetstorm.news/files/id/157939Exploit, Third Party Advisory
https://www.exploit-db.com/exploits/48556Exploit, Third Party Advisory, VDB Entry
https://www.vulncheck.com/advisories/secure-computing-snapgear-management-console-sg-arbitrary-file-readwriteThird Party Advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5568.phpExploit, Third Party Advisory

Timeline

Published: Jan 6, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2020-36909?

How severe is CVE-2020-36909?

CVE-2020-36909 has a CVSS score of 8.7/10 (HIGH severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2020-36909?

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.

Are you affected by CVE-2020-36909?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST