Server code execution via unchecked extension extraction
Published Feb 21, 2024 · Updated Aug 4, 2026
Path traversal in ConnectWise ScreenConnect 23.9.7 and earlier allows remote authenticated users to write files outside extension directories. ZipDirectory.ExtractToDirectory extracts attacker-controlled archive entries without rejecting parent-directory sequences, allowing writes beyond the intended folder. Administrator access and server processing of a crafted extension are required; a web shell written into the web root executes code in the server context.
Summary
What happened
Path traversal in ConnectWise ScreenConnect 23.9.7 and earlier allows remote authenticated users to write files outside extension directories. ZipDirectory.ExtractToDirectory extracts attacker-controlled archive entries without rejecting parent-directory sequences, allowing writes beyond the intended folder. Administrator access and server processing of a crafted extension are required; a web shell written into the web root executes code in the server context.
The record
- CVE
- CVE-2024-1708
- Published
- Feb 21, 2024
- Updated
- Aug 4, 2026
- Vendor
- ConnectWise
- Product
- ScreenConnect
- Classifications
- CWE-22, T1190
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Feb 19, 2024Exploitation reportedSlashAndGrab exploitation and post-exploitation activity
- Feb 21, 2024CVE publishedPublication date reported by the CVE source.
- Aug 4, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=23.9.7 changes=[{"at":"23.9.8","status":"unaffected"}]
What conditions does exploitation require?
What is affected?
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
- SlashAndGrab ScreenConnect exploit-chain reproductionproof of concept · demonstrated
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Reported exploitation
Technologies
Your stack
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Your stack
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