Arbitrary file write via upload path traversal
Published Mar 13, 2024 · Updated Dec 16, 2025
Path traversal in Arcserve Unified Data Protection 8.1 and 9.2 allows remote authenticated users to write arbitrary files via an import request. ImportNodeServlet uses an attacker-controlled upload path without constraining traversal segments, so the file escapes its report temporary directory and is written anywhere accessible to the UDP Console’s SYSTEM account. Valid Console access is required for this CVE alone; replacing a privileged executable can compromise the Windows host, while chaining the separate wizardLogin flaw removes that authentication gate.
Summary
What happened
Path traversal in Arcserve Unified Data Protection 8.1 and 9.2 allows remote authenticated users to write arbitrary files via an import request. ImportNodeServlet uses an attacker-controlled upload path without constraining traversal segments, so the file escapes its report temporary directory and is written anywhere accessible to the UDP Console’s SYSTEM account. Valid Console access is required for this CVE alone; replacing a privileged executable can compromise the Windows host, while chaining the separate wizardLogin flaw removes that authentication gate.
The record
- CVE
- CVE-2024-0800
- Published
- Mar 13, 2024
- Updated
- Dec 16, 2025
- Vendor
- Arcserve
- Product
- Arcserve Unified Data Protection (UDP)
- Classifications
- CWE-434, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 13, 2024CVE publishedPublication date reported by the CVE source.
- Dec 16, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=8.1
- Affected versionversion=0 <=9.2
- Affected versionversion=9.2
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
- arcserve_udp_console_wizardLogin_auth_bypass.pyfunctional · demonstrated
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Reported exploitation
- Possible Arcserve UDP exploitation attemptsreported exploitation
Technologies
Your stack
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Your stack
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