CVE-2021-36356

Name: CVE-2021-36356
Creator: NVD / NIST
Published: 2021-08-31T04:15:10.497+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 54.39%

Last modified Jun 17, 2026

CVE-2021-36356 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. KRAMER VIAware through August 2021 allows remote attackers to execute arbitrary code because ajaxPages/writeBrowseFilePathAjax.php accepts arbitrary executable pathnames (even though browseSystemFiles.php is no longer reachable via the GUI). NOTE: this issue exists because of an incomplete fix for CVE-2019-17124.. EPSS estimates a 54.39% chance of exploitation in the next 30 days.

Description

KRAMER VIAware through August 2021 allows remote attackers to execute arbitrary code because ajaxPages/writeBrowseFilePathAjax.php accepts arbitrary executable pathnames (even though browseSystemFiles.php is no longer reachable via the GUI). NOTE: this issue exists because of an incomplete fix for CVE-2019-17124.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

54.39%

98.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Kramerav	Viaware	<= 2021-08

References

http://packetstormsecurity.com/files/166623/Kramer-VIAware-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://write-up.github.io/kramerav/Third Party Advisory
http://packetstormsecurity.com/files/166623/Kramer-VIAware-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://write-up.github.io/kramerav/Third Party Advisory

Timeline

Published: Aug 31, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-36356?

How severe is CVE-2021-36356?

CVE-2021-36356 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 54.39% probability of exploitation in the next 30 days.

How do I fix CVE-2021-36356?

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-2021-36356?

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

Scan your code now

Source: NVD / NIST