Path Traversal in Endian Firewall
CVE-2026-34790
Endian Firewall version 3.3.25 and prior allow authenticated users to delete arbitrary files via directory traversal in the remove ARCHIVE parameter to /cgi-bin/backup.cgi. The remove ARCHIVE parameter value is used to construct a file path without sanitization of directory traversal sequences, which is then passed to an unlink() call.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.
EPSS exploit prediction
EPSS: 0.009 (58.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.009 · change: +0.003
Affected products
- Endian Firewall — versions 0, 3.3.25
- Endian Firewall Community
Weakness classification (CWE)
References
- help.endian.com/hc/en-us/sections/360004371358-Community (release-notes, Release Notes)
- www.vulncheck.com/advisories/endian-firewall-cgi-bin-backup-cgi-remove-archive-… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-34790?
- CVE-2026-34790 is a high-severity vulnerability in Endian Firewall, classified under Path Traversal. CVSS score: 7.1/10. Published 2026-04-02.
- How severe is CVE-2026-34790?
- High severity. CVSS v3 base score is 7.1 out of 10.