CVE-2021-30110

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-07-22 · updated 2026-06-17

Description

dttray.exe in Greyware Automation Products Inc Domain Time II before 5.2.b.20210331 allows remote attackers to execute arbitrary code via a URL to a malicious update in a spoofed response to the UDP query used to check for updates.

Affected products

Greyware Domain Time Ii: before 5.2.b.20210331 — fixed in 5.2.b.20210331

How to fix

Upgrade to a fixed version: Greyware Domain Time Ii 5.2.b.20210331. Check the vendor advisory for mitigations.

References

https://blog.grimm-co.com/2021/04/time-for-upgrade.html
https://www.greyware.com/software/domaintime/
https://www.greyware.com/software/domaintime/v5/installation/v5x.asp#currentVersion
https://blog.grimm-co.com/2021/04/time-for-upgrade.html
https://www.greyware.com/software/domaintime/
https://www.greyware.com/software/domaintime/v5/installation/v5x.asp#currentVersion

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