What is CVE-2021-38471?

CVE-2021-38471 is a critical-severity vulnerability in Auvesy Versiondog, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.1/10. Published 2021-10-22.

How severe is CVE-2021-38471?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Arbitrary file upload in Auvesy Versiondog

CVE-2021-38471

There are multiple API function codes that permit data writing to any file, which may allow an attacker to modify existing files or create new files.

Vulnerability class: Unrestricted File Upload

Published 2021-10-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (64.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Auvesy Versiondog — versions All

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

us-cert.cisa.gov/ics/advisories/icsa-21-292-01 (US Government Resource, Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-38471?: CVE-2021-38471 is a critical-severity vulnerability in Auvesy Versiondog, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.1/10. Published 2021-10-22.
How severe is CVE-2021-38471?: Critical severity. CVSS v3 base score is 9.1 out of 10.