Connectwise
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Unauthorized file transfer and execution in the ConnectWise ScreenConnect client (all versions prior to 26.6.5) lets a party to an active remote session push and run files on the Host machine without authorization or the Host's confirmation under certain circumstances. This turns a legitimate support session into a code-execution channel against the remote endpoint; ScreenConnect servers are explicitly not affected. No public exploit identified at time of analysis, though the client's remote-support role makes it an attractive target.
Code integrity failure in ConnectWise Automate Agent versions prior to 2026.5 allows adjacent network attackers to substitute malicious components during plugin loading and self-update operations. The Automate agent does not fully verify the authenticity of downloaded components, enabling code execution at the agent's privilege level across managed endpoints. No public exploit identified at time of analysis, though the high CVSS score of 8.8 and the agent's deep system access make this a priority remediation for MSPs using the platform.
Unencrypted client-server communications in ConnectWise Automate Solution Center expose sensitive data to network interception in all versions before 2026.4. Remote authenticated attackers with network access can capture Solution Center traffic containing potentially high-value confidential information (CVSS:3.1 C:H). No active exploitation confirmed at time of analysis. EPSS data unavailable for this recent CVE.
A cryptographic authentication bypass vulnerability in ConnectWise ScreenConnect allows remote attackers who gain access to server-level cryptographic material to authenticate as any user and obtain elevated privileges. The vulnerability affects all ScreenConnect versions prior to 26.1 and carries a CVSS score of 9.0, indicating critical severity. While not currently listed in CISA's KEV catalog and with no public proof-of-concept available, the vulnerability's authentication bypass nature and potential for complete system compromise make it a high-priority patching target.
Stored cross-site scripting in ConnectWise PSA versions before 2026.1 allows authenticated users to inject malicious scripts into Time Entry notes that execute in other users' browsers when viewed in the audit trail. An attacker with legitimate access could leverage this to steal session tokens, perform unauthorized actions, or compromise other users within the PSA system. No patch is currently available.
ConnectWise ScreenConnect 25.2.3 and earlier may be susceptible to ViewState code injection when machine keys are compromised, enabling remote code execution through ASP.NET deserialization.
Path traversal in ConnectWise ScreenConnect 23.9.7 and earlier enables attackers with administrative privileges to write files outside intended directories, leading to remote code execution or direct compromise of confidential data and critical systems. This vulnerability is confirmed actively exploited (CISA KEV) with publicly available exploit code, and the EPSS score of 53.66% (98th percentile) reflects extremely high real-world exploitation activity. It was disclosed alongside the more severe CVE-2024-1709 authentication bypass, which together formed a widely abused exploit chain against ScreenConnect on-premises servers in early 2024.
ScreenConnect versions prior to 26.2 permit an authenticated user holding Host Pass creation privileges to bypass the intended maximum token expiration duration when generating delegated access tokens. The root cause is improper input validation (CWE-1284) on the duration field in the Host Pass workflow, allowing the value to exceed its designed upper bound. While no public exploit or CISA KEV listing exists at time of analysis, successful abuse results in the creation of anomalously long-lived access tokens, extending delegated access well beyond the security policy limit - a persistence and access-control integrity risk.
Professional Service Automation contains a vulnerability that allows attackers to client-side scripts access to session cookie values (CVSS 6.5).
In ConnectWise PSA versions older than 2025.9, a vulnerability exists where authenticated users could gain access to sensitive user information. Specific API requests were found to return an overly verbose user object, which included encrypted password hashes for other users. Authenticated users could then retrieve these hashes. An attacker or privileged user could then use these exposed hashes to conduct offline brute-force or dictionary attacks. Such attacks could lead to credential compromise, allowing unauthorized access to accounts, and potentially privilege escalation within the system.
ConnectWise-Password-Encryption-Utility.exe in ConnectWise Risk Assessment allows an attacker to extract a hardcoded AES decryption key via reverse engineering. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.
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. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
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. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Connectwise Automate 2022.11 is vulnerable to Cleartext authentication. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Connectwise Control 22.8.10013.8329 is vulnerable to Cross Origin Resource Sharing (CORS). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In Connectwise Control 22.8.10013.8329, the login page does not implement HSTS headers therefore not enforcing HTTPS. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Connectwise Automate 2022.11 is vulnerable to Clickjacking. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
ConnectWise ScreenConnect versions 22.6 and below contained a flaw allowing potential brute force attacks on custom access tokens due to inadequate rate-limiting controls in the default. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An XXE vulnerability exists in ConnectWise Automate before 2021.0.6.132. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in ConnectWise Automate before 2021.5. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Agent Update System in ConnectWise Automate before 2020.8 allows Privilege Escalation because the _LTUPDATE folder has weak permissions. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
ConnectWise Automate through 2020.x has insufficient validation on certain authentication paths, allowing authentication bypass via a series of attempts. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A SQLi exists in the probe code of all Connectwise Automate versions before 2020.7 or 2019.12. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. No vendor patch available.
By using an Automate API in ConnectWise Automate before 2020.5.178, a remote authenticated user could execute commands and/or modifications within an individual Automate instance by triggering an SQL. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
services/system_io/actionprocessor/Contact.rails in ConnectWise Manage 2017.5 allows arbitrary client-side JavaScript code execution (involving a ContactCommon field) on victims who click on a. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
services/system_io/actionprocessor/System.rails in ConnectWise Manage 2017.5 is vulnerable to Cross-Site Request Forgery (CSRF), as demonstrated by changing an e-mail address setting. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Unauthorized file transfer and execution in the ConnectWise ScreenConnect client (all versions prior to 26.6.5) lets a party to an active remote session push and run files on the Host machine without authorization or the Host's confirmation under certain circumstances. This turns a legitimate support session into a code-execution channel against the remote endpoint; ScreenConnect servers are explicitly not affected. No public exploit identified at time of analysis, though the client's remote-support role makes it an attractive target.
Code integrity failure in ConnectWise Automate Agent versions prior to 2026.5 allows adjacent network attackers to substitute malicious components during plugin loading and self-update operations. The Automate agent does not fully verify the authenticity of downloaded components, enabling code execution at the agent's privilege level across managed endpoints. No public exploit identified at time of analysis, though the high CVSS score of 8.8 and the agent's deep system access make this a priority remediation for MSPs using the platform.
Unencrypted client-server communications in ConnectWise Automate Solution Center expose sensitive data to network interception in all versions before 2026.4. Remote authenticated attackers with network access can capture Solution Center traffic containing potentially high-value confidential information (CVSS:3.1 C:H). No active exploitation confirmed at time of analysis. EPSS data unavailable for this recent CVE.
A cryptographic authentication bypass vulnerability in ConnectWise ScreenConnect allows remote attackers who gain access to server-level cryptographic material to authenticate as any user and obtain elevated privileges. The vulnerability affects all ScreenConnect versions prior to 26.1 and carries a CVSS score of 9.0, indicating critical severity. While not currently listed in CISA's KEV catalog and with no public proof-of-concept available, the vulnerability's authentication bypass nature and potential for complete system compromise make it a high-priority patching target.
Stored cross-site scripting in ConnectWise PSA versions before 2026.1 allows authenticated users to inject malicious scripts into Time Entry notes that execute in other users' browsers when viewed in the audit trail. An attacker with legitimate access could leverage this to steal session tokens, perform unauthorized actions, or compromise other users within the PSA system. No patch is currently available.
ConnectWise ScreenConnect 25.2.3 and earlier may be susceptible to ViewState code injection when machine keys are compromised, enabling remote code execution through ASP.NET deserialization.
Path traversal in ConnectWise ScreenConnect 23.9.7 and earlier enables attackers with administrative privileges to write files outside intended directories, leading to remote code execution or direct compromise of confidential data and critical systems. This vulnerability is confirmed actively exploited (CISA KEV) with publicly available exploit code, and the EPSS score of 53.66% (98th percentile) reflects extremely high real-world exploitation activity. It was disclosed alongside the more severe CVE-2024-1709 authentication bypass, which together formed a widely abused exploit chain against ScreenConnect on-premises servers in early 2024.
ScreenConnect versions prior to 26.2 permit an authenticated user holding Host Pass creation privileges to bypass the intended maximum token expiration duration when generating delegated access tokens. The root cause is improper input validation (CWE-1284) on the duration field in the Host Pass workflow, allowing the value to exceed its designed upper bound. While no public exploit or CISA KEV listing exists at time of analysis, successful abuse results in the creation of anomalously long-lived access tokens, extending delegated access well beyond the security policy limit - a persistence and access-control integrity risk.
Professional Service Automation contains a vulnerability that allows attackers to client-side scripts access to session cookie values (CVSS 6.5).
In ConnectWise PSA versions older than 2025.9, a vulnerability exists where authenticated users could gain access to sensitive user information. Specific API requests were found to return an overly verbose user object, which included encrypted password hashes for other users. Authenticated users could then retrieve these hashes. An attacker or privileged user could then use these exposed hashes to conduct offline brute-force or dictionary attacks. Such attacks could lead to credential compromise, allowing unauthorized access to accounts, and potentially privilege escalation within the system.
ConnectWise-Password-Encryption-Utility.exe in ConnectWise Risk Assessment allows an attacker to extract a hardcoded AES decryption key via reverse engineering. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.
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. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
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. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Connectwise Automate 2022.11 is vulnerable to Cleartext authentication. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Connectwise Control 22.8.10013.8329 is vulnerable to Cross Origin Resource Sharing (CORS). Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In Connectwise Control 22.8.10013.8329, the login page does not implement HSTS headers therefore not enforcing HTTPS. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Connectwise Automate 2022.11 is vulnerable to Clickjacking. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
ConnectWise ScreenConnect versions 22.6 and below contained a flaw allowing potential brute force attacks on custom access tokens due to inadequate rate-limiting controls in the default. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An XXE vulnerability exists in ConnectWise Automate before 2021.0.6.132. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An issue was discovered in ConnectWise Automate before 2021.5. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Agent Update System in ConnectWise Automate before 2020.8 allows Privilege Escalation because the _LTUPDATE folder has weak permissions. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
ConnectWise Automate through 2020.x has insufficient validation on certain authentication paths, allowing authentication bypass via a series of attempts. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A SQLi exists in the probe code of all Connectwise Automate versions before 2020.7 or 2019.12. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. No vendor patch available.
By using an Automate API in ConnectWise Automate before 2020.5.178, a remote authenticated user could execute commands and/or modifications within an individual Automate instance by triggering an SQL. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
services/system_io/actionprocessor/Contact.rails in ConnectWise Manage 2017.5 allows arbitrary client-side JavaScript code execution (involving a ContactCommon field) on victims who click on a. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
services/system_io/actionprocessor/System.rails in ConnectWise Manage 2017.5 is vulnerable to Cross-Site Request Forgery (CSRF), as demonstrated by changing an e-mail address setting. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.