How severe is CVE-2021-30110?

CVE-2021-30110 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-30110 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-30110?

CVE-2021-30110 affects Greyware Domain Time Ii. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-30110?

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-2021-30110 published?

CVE-2021-30110 was published on 2021-07-22 and last updated on 2026-06-17.

CVE-2021-30110

CVE-2021-30110 is a high-severity vulnerability in Greyware Domain Time Ii with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.1
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Greyware Domain Time Ii
Published: 2021-07-22
Last modified: 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.

Frequently asked questions

What is CVE-2021-30110?: 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.
How severe is CVE-2021-30110?: CVE-2021-30110 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-30110 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30110?: CVE-2021-30110 affects Greyware Domain Time Ii. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-30110?: 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-2021-30110 published?: CVE-2021-30110 was published on 2021-07-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:greyware:domain_time_ii:*:*:*:*:*:*:*:*