How severe is CVE-2021-38459?

CVE-2021-38459 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-38459 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-38459?

CVE-2021-38459 affects Auvesy Versiondog. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-38459?

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-2021-38459 published?

CVE-2021-38459 was published on 2021-10-22 and last updated on 2026-06-17.

CVE-2021-38459

CVE-2021-38459 is a high-severity vulnerability in Auvesy Versiondog with a CVSS 3.x base score of 8.1. 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-294.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 7.5
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-294
Affected product: Auvesy Versiondog
Published: 2021-10-22
Last modified: 2026-06-17

Description

The data of a network capture of the initial handshake phase can be used to authenticate at a SYSDBA level. If a specific .exe is not restarted often, it is possible to access the needed handshake packets between admin/client connections. Using the SYSDBA permission, an attacker can change user passwords or delete the database.

Frequently asked questions

What is CVE-2021-38459?: The data of a network capture of the initial handshake phase can be used to authenticate at a SYSDBA level. If a specific .exe is not restarted often, it is possible to access the needed handshake packets between admin/client connections. Using the SYSDBA permission, an attacker can change user passwords or delete the database.
How severe is CVE-2021-38459?: CVE-2021-38459 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-38459 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-38459?: CVE-2021-38459 affects Auvesy Versiondog. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-38459?: 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-2021-38459 published?: CVE-2021-38459 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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