How severe is CVE-2019-12811?

CVE-2019-12811 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-12811 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-12811?

CVE-2019-12811 affects Activesoft Mybuilder. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-12811?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-12811 published?

CVE-2019-12811 was published on 2019-10-07 and last updated on 2026-06-17.

CVE-2019-12811

CVE-2019-12811 is a critical-severity vulnerability in Activesoft Mybuilder with a CVSS 3.x base score of 9.8. 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-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Activesoft Mybuilder
Published: 2019-10-07
Last modified: 2026-06-17

Description

ActiveX Control in MyBuilder before 6.2.2019.814 allow an attacker to execute arbitrary command via the ShellOpen method. This can be leveraged for code execution

Frequently asked questions

What is CVE-2019-12811?: ActiveX Control in MyBuilder before 6.2.2019.814 allow an attacker to execute arbitrary command via the ShellOpen method. This can be leveraged for code execution
How severe is CVE-2019-12811?: CVE-2019-12811 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-12811 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-12811?: CVE-2019-12811 affects Activesoft Mybuilder. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-12811?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-12811 published?: CVE-2019-12811 was published on 2019-10-07 and last updated on 2026-06-17.

References

https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=35155

Affected products (1)

cpe:2.3:a:activesoft:mybuilder:*:*:*:*:*:*:*:*

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