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

Q: How do I fix CVE-2026-34791?

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

Q: Is CVE-2026-34791 being exploited?

CVE-2026-34791 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-2026-34791 affect?

CVE-2026-34791 affects firewall community. Severity is high (CVSS 8.8). Endian Firewall version 3.3.25 and prior allow authenticated users to execute arbitrary OS commands via the DATE parameter to /cgi-bin/logs_proxy.cgi. The DATE parameter value is used to construct a file path that is passed to a Perl open()

This month

HIGH 8.8UPGRADE

CVE-2026-34791 is a high-severity flaw (CVSS 8.8) 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 execute arbitrary OS commands via the DATE parameter to /cgi-bin/logs_proxy.cgi. The DATE parameter value is used to construct a file path that is passed to a Perl open() call, which allows command injection due to an incomplete regular expression validation.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-78
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 21:10 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-2026-34791?

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

Is CVE-2026-34791 being exploited?

CVE-2026-34791 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-2026-34791 affect?

CVE-2026-34791 affects firewall community. Severity is high (CVSS 8.8). Endian Firewall version 3.3.25 and prior allow authenticated users to execute arbitrary OS commands via the DATE parameter to /cgi-bin/logs_proxy.cgi. The DATE parameter value is used to construct a file path that is passed to a Perl open()

How urgent is CVE-2026-34791?

Priority 48/100. High severity

Software pages

Perl vulnerabilities

Related CVEs

CVE-2026-34790 HIGH 7.1 UPGRADE Endian Firewall version 3.3.25 and prior allow authenticated users to delete arbitrary files via directory tra

References

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