CVE-2021-37573

Name: CVE-2021-37573
Creator: NVD / NIST
Published: 2021-08-09T13:15:07.48+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 3.40%

Last modified Jun 17, 2026

CVE-2021-37573 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A reflected cross-site scripting (XSS) vulnerability in the web server TTiny Java Web Server and Servlet Container (TJWS) <=1.115 allows an adversary to inject malicious code on the server's "404 Page not Found" error page. EPSS estimates a 3.40% chance of exploitation in the next 30 days.

Description

A reflected cross-site scripting (XSS) vulnerability in the web server TTiny Java Web Server and Servlet Container (TJWS) <=1.115 allows an adversary to inject malicious code on the server's "404 Page not Found" error page

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

3.40%

87.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Tiny Java Web Server Project	Tiny Java Web Server	<= 1.115

References

http://packetstormsecurity.com/files/163825/Tiny-Java-Web-Server-1.115-Cross-Site-Scripting.htmlExploit, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Aug/13Exploit, Mailing List, Third Party Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-042.txtExploit, Third Party Advisory
http://packetstormsecurity.com/files/163825/Tiny-Java-Web-Server-1.115-Cross-Site-Scripting.htmlExploit, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Aug/13Exploit, Mailing List, Third Party Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-042.txtExploit, Third Party Advisory

Timeline

Published: Aug 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37573?

How severe is CVE-2021-37573?

CVE-2021-37573 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 3.40% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37573?

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-2021-37573?

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

Scan your code now

Source: NVD / NIST