CVE-2026-34790

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.3.25]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "firewall", "vendor": "endian"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "3.3.25"}}], "enrichment": {"confidence": 83.0, "confidence_source": "matching", "scores": [{"score": 83.0, "source": "matching"}]}, "original": {"product": "Endian Firewall", "source": "cna", "vendor": "Endian"}, "product": "endian_firewall", "vendor": "endian_firewall"}], "analysis": {"en": {"generated_at": "2026-04-07T20:24:31.315239+00:00", "value": {"mitigation_remediation": ["Apply the latest firmware update or security patch released by Endian for affected versions.", "If no immediate patch is available, restrict the range of authenticated users who can access /cgi-bin/backup.cgi or disable the backup interface temporarily.", "Monitor system logs for attempted unlink operations and file deletions to detect potential abuse."], "summary": {"action": "Apply Patch", "impact": "Arbitrary file deletion by authenticated users"}, "threat_synthesis": {"affected_systems": "Endian Firewall versions 2.1.2, 2.4, 3.3.25 and the community edition are vulnerable. Any deployment using these firmware releases is susceptible to the flaw, regardless of size or location.", "description_and_impact": "Authenticated users can trigger deletion of arbitrary files by exploiting directory traversal in the remove ARCHIVE parameter of /cgi-bin/backup.cgi. The application constructs a file path from the unsanitized input and calls unlink(), allowing a logged\u2011in user to delete any file on the firewall. This can destroy configuration data, logs, or other critical files, leading to loss of integrity and potential service disruption.", "risk_and_exploitability": "The CVSS score of 7.1 indicates high severity. The EPSS score is below 1%, suggesting low exploitation likelihood so far. It is not listed in the CISA KEV catalog. As the flaw requires authentication, the attacker must first log into the firewall with a privileged account, then send a crafted request to /cgi-bin/backup.cgi containing a directory traversal sequence. Successful exploitation would allow the removal of arbitrary files, severely compromising system integrity."}}}}, "created": "2026-04-02T20:12:12.548308+00:00", "updated": "2026-04-08T19:56:16.458356+00:00", "vendors": ["endian", "endian$PRODUCT$firewall", "endian_firewall", "endian_firewall$PRODUCT$endian_firewall"]}