{"id":"UBUNTU-CVE-2026-85068","details":"Network UPS Tools is a collection of programs which provide a common interface for monitoring and administering UPS, PDU and SCD hardware. From 2.4.2 through 2.8.5, ippon_command in drivers/blazer_usb.c partially initializes char tmp[64] with a short Megatec status query and then passes a fixed eight-byte chunk to usb_control_msg. A malicious firmware-controlled USB device presenting the Mustek Powermust VID 0x06da and Mustek Powermust PID 0x0003 matches blazer_usb_id, selects ippon_subdriver, and can receive the uninitialized trailing stack bytes during normal polling. The disclosure is bounded and read-only, requires physical or supply-chain access to the USB bus, and has no established integrity or availability impact. This issue is scheduled to be fixed in version 2.8.6.","modified":"2026-11-07T01:46:42.905773223Z","published":"2026-11-06T00:00:00Z","upstream":["CVE-2026-85068"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-85068"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-85068"},{"type":"REPORT","url":"https://github.com/networkupstools/nut/security/advisories/GHSA-fjxc-2vpv-mqc8"},{"type":"REPORT","url":"https://github.com/networkupstools/nut/pull/3529"},{"type":"REPORT","url":"https://github.com/networkupstools/nut/commit/30d56d4282f823949b40763d5c76461c7dd107b3"}],"affected":[{"package":{"name":"nut","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/nut?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6.4-2.3ubuntu2","2.7.1-1ubuntu1","2.7.1-1ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_version":"2.7.1-1ubuntu1.2","binary_name":"libups-nut-perl"},{"binary_name":"libupsclient3","binary_version":"2.7.1-1ubuntu1.2"},{"binary_version":"2.7.1-1ubuntu1.2","binary_name":"nut"},{"binary_version":"2.7.1-1ubuntu1.2","binary_name":"nut-cgi"},{"binary_version":"2.7.1-1ubuntu1.2","binary_name":"nut-client"},{"binary_name":"nut-ipmi","binary_version":"2.7.1-1ubuntu1.2"},{"binary_name":"nut-monitor","binary_version":"2.7.1-1ubuntu1.2"},{"binary_version":"2.7.1-1ubuntu1.2","binary_name":"nut-server"},{"binary_name":"nut-snmp","binary_version":"2.7.1-1ubuntu1.2"},{"binary_name":"nut-xml","binary_version":"2.7.1-1ubuntu1.2"},{"binary_name":"python-nut","binary_version":"2.7.1-1ubuntu1.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-85068.json"}},{"package":{"name":"nut","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/nut?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.1-1ubuntu5","2.7.1-1ubuntu6","2.7.2-4ubuntu1","2.7.2-4ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libups-nut-perl","binary_version":"2.7.2-4ubuntu1.2"},{"binary_name":"libupsclient4","binary_version":"2.7.2-4ubuntu1.2"},{"binary_name":"nut","binary_version":"2.7.2-4ubuntu1.2"},{"binary_name":"nut-cgi","binary_version":"2.7.2-4ubuntu1.2"},{"binary_name":"nut-client","binary_version":"2.7.2-4ubuntu1.2"},{"binary_name":"nut-ipmi","binary_version":"2.7.2-4ubuntu1.2"},{"binary_version":"2.7.2-4ubuntu1.2","binary_name":"nut-monitor"},{"binary_name":"nut-server","binary_version":"2.7.2-4ubuntu1.2"},{"binary_version":"2.7.2-4ubuntu1.2","binary_name":"nut-snmp"},{"binary_name":"nut-xml","binary_version":"2.7.2-4ubuntu1.2"},{"binary_name":"python-nut","binary_version":"2.7.2-4ubuntu1.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-85068.json"}},{"package":{"name":"nut","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/nut?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.4-5ubuntu4","2.7.4-5.1ubuntu1","2.7.4-5.1ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_name":"libnutclient0","binary_version":"2.7.4-5.1ubuntu2"},{"binary_name":"libups-nut-perl","binary_version":"2.7.4-5.1ubuntu2"},{"binary_name":"libupsclient4","binary_version":"2.7.4-5.1ubuntu2"},{"binary_version":"2.7.4-5.1ubuntu2","binary_name":"nut"},{"binary_name":"nut-cgi","binary_version":"2.7.4-5.1ubuntu2"},{"binary_name":"nut-client","binary_version":"2.7.4-5.1ubuntu2"},{"binary_version":"2.7.4-5.1ubuntu2","binary_name":"nut-ipmi"},{"binary_name":"nut-monitor","binary_version":"2.7.4-5.1ubuntu2"},{"binary_version":"2.7.4-5.1ubuntu2","binary_name":"nut-server"},{"binary_name":"nut-snmp","binary_version":"2.7.4-5.1ubuntu2"},{"binary_version":"2.7.4-5.1ubuntu2","binary_name":"nut-xml"},{"binary_name":"python-nut","binary_version":"2.7.4-5.1ubuntu2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-85068.json"}},{"package":{"name":"nut","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/nut?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.4-9ubuntu1","2.7.4-11ubuntu3","2.7.4-11ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_name":"libnutclient0","binary_version":"2.7.4-11ubuntu4"},{"binary_name":"libnutscan1","binary_version":"2.7.4-11ubuntu4"},{"binary_name":"libups-nut-perl","binary_version":"2.7.4-11ubuntu4"},{"binary_version":"2.7.4-11ubuntu4","binary_name":"libupsclient4"},{"binary_version":"2.7.4-11ubuntu4","binary_name":"nut"},{"binary_name":"nut-cgi","binary_version":"2.7.4-11ubuntu4"},{"binary_name":"nut-client","binary_version":"2.7.4-11ubuntu4"},{"binary_name":"nut-ipmi","binary_version":"2.7.4-11ubuntu4"},{"binary_version":"2.7.4-11ubuntu4","binary_name":"nut-powerman-pdu"},{"binary_name":"nut-server","binary_version":"2.7.4-11ubuntu4"},{"binary_name":"nut-snmp","binary_version":"2.7.4-11ubun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