What is CVE-2021-38477?

CVE-2021-38477 is a critical-severity vulnerability in Auvesy Versiondog, classified under External Control of File Name or Path. CVSS score: 9.8/10. Published 2021-10-22.

How severe is CVE-2021-38477?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Auvesy Versiondog

CVE-2021-38477

There are multiple API function codes that permit reading and writing data to or from files and directories, which could lead to the manipulation and/or the deletion of files.

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

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (65.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Auvesy Versiondog — versions All

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path

References

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

Frequently asked questions

What is CVE-2021-38477?: CVE-2021-38477 is a critical-severity vulnerability in Auvesy Versiondog, classified under External Control of File Name or Path. CVSS score: 9.8/10. Published 2021-10-22.
How severe is CVE-2021-38477?: Critical severity. CVSS v3 base score is 9.8 out of 10.