How severe is CVE-2026-34790?

CVE-2026-34790 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.

Is CVE-2026-34790 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34790?

CVE-2026-34790 affects Endian Firewall Community. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34790?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-34790 have an EU (EUVD) identifier?

Yes. CVE-2026-34790 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18262.

When was CVE-2026-34790 published?

CVE-2026-34790 was published on 2026-04-02 and last updated on 2026-06-17.

CVE-2026-34790

CVE-2026-34790 is a high-severity vulnerability in Endian Firewall Community with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v4: 7.1
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18262
Weakness: CWE-22
Affected product: Endian Firewall Community
Published: 2026-04-02
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-34790?: CVE-2026-34790 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability low.
Is CVE-2026-34790 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34790?: CVE-2026-34790 affects Endian Firewall Community. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34790?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-34790 have an EU (EUVD) identifier?: Yes. CVE-2026-34790 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18262.
When was CVE-2026-34790 published?: CVE-2026-34790 was published on 2026-04-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:endian:firewall_community:*:*:*:*:*:*:*:*

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