Client hijacking via reflected installer parameters
Published Feb 13, 2023 · Updated Jun 19, 2025
Code injection in ConnectWise Control before 22.9.10032 allows remote attackers to generate a client that connects to attacker infrastructure. The unauthenticated Bin/ConnectWiseControl.Client.exe endpoint reflects the h host and related URL parameters into the downloaded client without validation. A victim must run the generated client and accept the connection; the result is redirection to attacker-controlled infrastructure, while stronger arbitrary-code claims are disputed.
Summary
What happened
Code injection in ConnectWise Control before 22.9.10032 allows remote attackers to generate a client that connects to attacker infrastructure. The unauthenticated Bin/ConnectWiseControl.Client.exe endpoint reflects the h host and related URL parameters into the downloaded client without validation. A victim must run the generated client and accept the connection; the result is redirection to attacker-controlled infrastructure, while stronger arbitrary-code claims are disputed.
The record
- CVE
- CVE-2023-25719
- Published
- Feb 13, 2023
- Updated
- Jun 19, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-74, T1204.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 13, 2023CVE publishedPublication date reported by the CVE source.
- Jun 19, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- CYBIR reflected client parameter proof of conceptproof of concept · demonstrated
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Reported exploitation
- CYBIR report of active exploitationreported exploitation
Technologies
Your stack
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Your stack
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