How severe is CVE-2023-25719?

CVE-2023-25719 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-25719 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-25719?

CVE-2023-25719 affects Connectwise Control. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-25719?

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-2023-25719 published?

CVE-2023-25719 was published on 2023-02-13 and last updated on 2026-06-17.

CVE-2023-25719

CVE-2023-25719 is a high-severity vulnerability in Connectwise Control with a CVSS 3.x base score of 8.8. 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-74.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Connectwise Control
Published: 2023-02-13
Last modified: 2026-06-17

Description

ConnectWise Control before 22.9.10032 (formerly known as ScreenConnect) fails to validate user-supplied parameters such as the Bin/ConnectWiseControl.Client.exe h parameter. This results in reflected data and injection of malicious code into a downloaded executable. The executable can be used to execute malicious queries or as a denial-of-service vector. NOTE: this CVE Record is only about the parameters, such as the h parameter (this CVE Record is not about the separate issue of signed executable files that are supposed to have unique configurations across customers' installations).

Frequently asked questions

What is CVE-2023-25719?: ConnectWise Control before 22.9.10032 (formerly known as ScreenConnect) fails to validate user-supplied parameters such as the Bin/ConnectWiseControl.Client.exe h parameter. This results in reflected data and injection of malicious code into a downloaded executable. The executable can be used to execute malicious queries or as a denial-of-service vector. NOTE: this CVE Record is only about the parameters, such as the h parameter (this CVE Record is not about the separate issue of signed executable files that are supposed to have unique configurations across customers' installations).
How severe is CVE-2023-25719?: CVE-2023-25719 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-25719 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-25719?: CVE-2023-25719 affects Connectwise Control. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-25719?: 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-2023-25719 published?: CVE-2023-25719 was published on 2023-02-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:connectwise:control:*:*:*:*:*:*:*:*

More vulnerabilities in Connectwise Control

CVE-2023-25718 — Critical (CVSS 9.8): In ConnectWise Control through 22.9.10032 (formerly known as ScreenConnect), after an executable file is signed,…
CVE-2019-16517 — Critical (CVSS 9.8): An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is a CORS…
CVE-2019-16513 — High (CVSS 8.8): An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. CSRF can be used to…
CVE-2019-16514 — High (CVSS 7.2): An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. The server allows…
CVE-2019-16515 — Medium (CVSS 6.5): An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. Certain HTTP security…
CVE-2019-16516 — Medium (CVSS 5.3): An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is a user…

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