CVE-2021-37573

Tiny Java Web Server vulnerability

CVSS

6.1

EPSS

3.4%

EPSS pct

88th

Exploited

No known

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

Affected vendor

Tiny Java Web Server Project

Affected product

Tiny Java Web Server

CVSS vector

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

Weakness type (CWE)

CWE-79 — Cross-Site Scripting (XSS)

Published

2021-08-09

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 3.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2021-37573

Confirm whether Tiny Java Web Server Project Tiny Java Web Server is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2021-37573.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-37573

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-37573 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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