CVE-2021-38455

mediumpriority · track · 26EPSS 0.008 · 55 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.77% (55th) EPSS

CVSS 4 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

The affected product’s OS Service does not verify any given parameter. A user can supply any type of parameter that will be passed to inner calls without checking the type of the parameter or the value.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

FixedVersiondogcisa_csaf_ot
AUVESY recommends upgrading Versiondog to Version 8.1 or later (login required).
https://www.my.versiondog.com/home-en.html

cvss

Technical severity, 0–10. One row per scoring source.

7.3

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4–7.3

v2.04mediumAV:N/AC:L/Au:S/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.07.3highCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:Hsecondary · CISA US

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:Hsecondary · ENISA EU

v3.17.3highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:Hsecondary · ics-cert@hq.dhs.gov USexploitability 2.1 · impact 5.2

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USCWE-20US

affected products (4)

Products and version ranges known to be affected.

Versiondog: All versions prior to v8.0all versionscisa_csaf_otUS
AUVESY Versiondog< 8.0cisa_csaf_otUS
AUVESY Versiondog≤ All ≤8.0enisa_euvdEU
auvesy versiondog< 8.0.0nvdUScpe:2.3:a:auvesy:versiondog:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-21-292-01AUVESY Versiondog2021-10-19icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow an attacker to achieve remote code execution, and acquire complete remote control over the machine.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2021-10-22modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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