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CVE-2021-38451: AUVESY Versiondog

• Severity: medium (CVSS 5.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-10-22 · updated 2026-06-17
• Weakness: CWE-125

Description

The affected product’s proprietary protocol CSC allows for calling numerous function codes. In order to call those function codes, the user must supply parameters. There is no sanitation on the value of the offset, which allows the client to specify any offset and read out-of-bounds data.

Affected products

• AUVESY Versiondog: before 8.0.0 — fixed in 8.0.0

How to fix

Upgrade to a fixed version: AUVESY Versiondog 8.0.0. Check the vendor advisory for mitigations.

References

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

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