CVE-2021-30110

Name: CVE-2021-30110
Creator: NVD / NIST
Published: 2021-07-22T13:15:08.36+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.97%

Last modified Jun 17, 2026

CVE-2021-30110 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 1.97% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

1.97%

77.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Greyware	Domain Time Ii	< 5.2.b.20210331

References

https://blog.grimm-co.com/2021/04/time-for-upgrade.htmlThird Party Advisory
https://www.greyware.com/software/domaintime/Vendor Advisory
https://www.greyware.com/software/domaintime/v5/installation/v5x.asp#currentVersionRelease Notes, Vendor Advisory
https://blog.grimm-co.com/2021/04/time-for-upgrade.htmlThird Party Advisory
https://www.greyware.com/software/domaintime/Vendor Advisory
https://www.greyware.com/software/domaintime/v5/installation/v5x.asp#currentVersionRelease Notes, Vendor Advisory

Timeline

Published: Jul 22, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-30110?

How severe is CVE-2021-30110?

CVE-2021-30110 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.97% probability of exploitation in the next 30 days.

How do I fix CVE-2021-30110?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-30110?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST