How severe is CVE-2021-38455?

CVE-2021-38455 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2021-38455 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38455?

CVE-2021-38455 affects Auvesy Versiondog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38455?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-38455 published?

CVE-2021-38455 was published on 2021-10-22 and last updated on 2026-06-17.

CVE-2021-38455

CVE-2021-38455 is a high-severity vulnerability in Auvesy Versiondog with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Auvesy Versiondog
Published: 2021-10-22
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2021-38455?: 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.
How severe is CVE-2021-38455?: CVE-2021-38455 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2021-38455 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38455?: CVE-2021-38455 affects Auvesy Versiondog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38455?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-38455 published?: CVE-2021-38455 was published on 2021-10-22 and last updated on 2026-06-17.

References

https://us-cert.cisa.gov/ics/advisories/icsa-21-292-01

Affected products (1)

cpe:2.3:a:auvesy:versiondog:*:*:*:*:*:*:*:*

More vulnerabilities in Auvesy Versiondog

CVE-2021-38477 — Critical (CVSS 9.8): There are multiple API function codes that permit reading and writing data to or from files and directories, which…
CVE-2021-38457 — Critical (CVSS 9.8): The server permits communication without any authentication procedure, allowing the attacker to initiate a session with…
CVE-2021-38449 — Critical (CVSS 9.8): Some API functions permit by-design writing or copying data into a given buffer. Since the client controls these…
CVE-2021-38471 — Critical (CVSS 9.1): There are multiple API function codes that permit data writing to any file, which may allow an attacker to modify…
CVE-2021-38469 — Critical (CVSS 9.1): Many of the services used by the affected product do not specify full paths for the DLLs they are loading. An attacker…
CVE-2021-38453 — Critical (CVSS 9.1): Some API functions allow interaction with the registry, which includes reading values as well as data modification.

All CVEs affecting Auvesy Versiondog →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →