CVE-2021-39384
CWE-434Published: March 20, 2022· Updated: Jun 17, 2026
Official Description
DWSurvey v3.2.0 was discovered to contain an arbitrary file write vulnerability via the component /utils/ToHtmlServlet.java.
Risk Analysis
DWSurvey v3.2.0 is affected by an arbitrary file write vulnerability, which can lead to remote code execution. This critical flaw allows attackers to write malicious files to the server. The CVSS score of 9.8 reflects the high severity of this vulnerability.
There is no known public exploit, and it is not in the KEV catalog. The vulnerability is remotely exploitable with low attack complexity.
Users should upgrade to a secure version of DWSurvey or apply vendor-supplied patches to remediate the file write vulnerability.
Technical Analysis
CVE-2021-39384 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-434)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-39384 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts