CVE-2026-34790: Endian Firewall version 3.3.25 and prior allow authenticated users to delete arbitrary files via directory tra

Q: How do I fix CVE-2026-34790?

firewall community: upgrade to newer than 3.3.25. Exact commands for each OS are on this page.

Q: Is CVE-2026-34790 being exploited?

CVE-2026-34790 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-34790 affect?

CVE-2026-34790 affects firewall community. Severity is high (CVSS 7.1). 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

Routine

HIGH 7.1UPGRADE

CVE-2026-34790 is a high-severity flaw (CVSS 7.1) affecting firewall community. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-22
Published	2026-04-02
Last modified	2026-10-26

Publisher (CNA): VulnCheck · Vendor: endian

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-02 15:16 UTCPublished CVE record published
2026-10-26 22:10 UTCUpdated Record last modified

endian firewall community UPGRADE

Affected: <= 3.3.25

Fixed in: newer than 3.3.25

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy firewall-community || rpm -q firewall-community || firewall-community --version

2. UPGRADE to newer than 3.3.25 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade firewall-community

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade firewall-community

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34790?

firewall community: upgrade to newer than 3.3.25. Exact commands for each OS are on this page.

Is CVE-2026-34790 being exploited?

CVE-2026-34790 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34790 affect?

CVE-2026-34790 affects firewall community. Severity is high (CVSS 7.1). 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

How urgent is CVE-2026-34790?

Priority 37/100. High severity

Related CVEs

CVE-2026-34791 HIGH 8.8 UPGRADE Endian Firewall version 3.3.25 and prior allow authenticated users to execute arbitrary OS commands via the DA

References

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