Authenticated arbitrary file deletion via backup path traversal
Published Apr 2, 2026 · Updated Apr 2, 2026
Path traversal in Endian Community Firewall 3.3.25 and earlier allows remote authenticated users to delete arbitrary files through backup.cgi. The remove ARCHIVE value is concatenated into a backup file path without neutralizing traversal sequences and is passed to unlink(). Administrative web access is required; successful exploitation can remove files outside the backup directory and interrupt firewall operation.
Summary
What happened
Path traversal in Endian Community Firewall 3.3.25 and earlier allows remote authenticated users to delete arbitrary files through backup.cgi. The remove ARCHIVE value is concatenated into a backup file path without neutralizing traversal sequences and is passed to unlink(). Administrative web access is required; successful exploitation can remove files outside the backup directory and interrupt firewall operation.
The record
- CVE
- CVE-2026-34790
- Published
- Apr 2, 2026
- Updated
- Apr 2, 2026
- Vendor
- Endian
- Product
- Endian Community Firewall
- Classifications
- CWE-22, T1070.004, T1083
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 2, 2026CVE publishedPublication date reported by the CVE source.
- Apr 2, 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=3.3.25
What conditions does exploitation require?
What is affected?
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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