CVE-2021-3159

Name: CVE-2021-3159
Creator: NVD / NIST
Published: 2021-07-23T15:15:07.563+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.52%

Last modified Jun 17, 2026

CVE-2021-3159 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A stored cross site scripting (XSS) vulnerability in the /sys/attachment/uploaderServlet component of Landray EKP V12.0.9.R.20160325 allows attackers to execute arbitrary web scripts or HTML via a crafted SVG, SHTML, or MHT file.. EPSS estimates a 0.52% chance of exploitation in the next 30 days.

Description

A stored cross site scripting (XSS) vulnerability in the /sys/attachment/uploaderServlet component of Landray EKP V12.0.9.R.20160325 allows attackers to execute arbitrary web scripts or HTML via a crafted SVG, SHTML, or MHT file.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.52%

40.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Landray	Landray Ekp	12.0.9.r.20160325

References

https://github.com/fa1c0n1/m01e-wiki/blob/main/my-vulns/landray-ekp.mdExploit, Third Party Advisory
https://github.com/fa1c0n1/m01e-wiki/blob/main/my-vulns/landray-ekp.mdExploit, Third Party Advisory

Timeline

Published: Jul 23, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-3159?

How severe is CVE-2021-3159?

CVE-2021-3159 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.52% probability of exploitation in the next 30 days.

How do I fix CVE-2021-3159?

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-2021-3159?

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

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Source: NVD / NIST