How severe is CVE-2021-38457?

CVE-2021-38457 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-38457 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38457?

CVE-2021-38457 affects Auvesy Versiondog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38457?

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

When was CVE-2021-38457 published?

CVE-2021-38457 was published on 2021-10-22 and last updated on 2026-06-17.

CVE-2021-38457

CVE-2021-38457 is a critical-severity vulnerability in Auvesy Versiondog with a CVSS 3.x base score of 9.8. 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-306.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Auvesy Versiondog
Published: 2021-10-22
Last modified: 2026-06-17

Description

The server permits communication without any authentication procedure, allowing the attacker to initiate a session with the server without providing any form of authentication.

Frequently asked questions

What is CVE-2021-38457?: The server permits communication without any authentication procedure, allowing the attacker to initiate a session with the server without providing any form of authentication.
How severe is CVE-2021-38457?: CVE-2021-38457 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-38457 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38457?: CVE-2021-38457 affects Auvesy Versiondog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38457?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-38457 published?: CVE-2021-38457 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:*:*:*:*:*:*:*:*

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