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Vulnerability record · CVE-2023-25718 · published 13 February 2023

CVE-2023-25718: Connectwise control improper verification of cryptographic signature vulnerability

Connectwise · Control

In ConnectWise Control through 22.9.10032 (formerly known as ScreenConnect), after an executable file is signed, additional instructions can be added without invalidating the signature, such as instructions that result in offering the end user a (different) attacker-controlled executable file. It is plausible that the end user may allow the download and execution of this file to proceed. There are ConnectWise Control configuration options that add mitigations.

9.8 CVSS 3.1 Critical EPSS 0.69% · top 49.3% CWE-347 · Improper verification of cryptographic signature
9.8CVSS 3.1 base score
0.69%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
7References
17 Jun 2026Last modified by NVD

Description

In ConnectWise Control through 22.9.10032 (formerly known as ScreenConnect), after an executable file is signed, additional instructions can be added without invalidating the signature, such as instructions that result in offering the end user a (different) attacker-controlled executable file. It is plausible that the end user may allow the download and execution of this file to proceed. There are ConnectWise Control configuration options that add mitigations.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cybir.com/2022/cve/connectwise-control-dns-spoofing-poc/ Not Applicable
https://m.youtube.com/watch?v=fbNVUgmstSc&pp=0gcJCf0Ao7VqN5tD
https://www.connectwise.com/blog/cybersecurity/the-importance-of-responsible-security-disclosures
https://cybir.com/2022/cve/connectwise-control-dns-spoofing-poc/ Not Applicable
https://www.connectwise.com Product
https://www.connectwise.com/blog/cybersecurity/the-importance-of-responsible-security-disclosures
https://www.huntress.com/blog/clearing-the-air-overblown-claims-of-vulnerabilities-exploits-severity

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-16517Connectwise control origin validation error vulnerabilityAn issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is a CORS misconfiguration, which reflected t…EPSS 1.3%8.8CVE-2023-25719Connectwise control injection vulnerabilityConnectWise Control before 22.9.10032 (formerly known as ScreenConnect) fails to validate user-supplied parameters such as the Bin/ConnectWiseControl…EPSS 1.1%8.8CVE-2019-16513Connectwise control cross-site request forgery vulnerabilityAn issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. CSRF can be used to send API requests.EPSS 1.0%7.2CVE-2019-16514Connectwise control unrestricted file upload vulnerabilityAn issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. The server allows remote code execution. Administra…EPSS 4.2%6.5CVE-2019-16515Connectwise control vulnerabilityAn issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. Certain HTTP security headers are not used.EPSS 1.7%5.3CVE-2019-16516Connectwise control observable discrepancy vulnerabilityAn issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is a user enumeration vulnerability, allowing…EPSS 19%4.8CVE-2019-16512Connectwise control cross-site scripting vulnerabilityAn issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is stored XSS in the Appearance modifier.EPSS 1.2%10.0CVE-2026-5430Wso2 api control plane improper verification of cryptographic signature vulnerabilityThe JWT authentication mechanism accepts tokens signed with algorithms other than those explicitly configured or supported. This allows an attacker t…KEVEPSS 0.59%

Source: NIST National Vulnerability Database (record CVE-2023-25718), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.