{"id":"CVE-2026-85068","aliases":["DEBIAN-CVE-2026-85068","EUVD-2026-117878","GHSA-fjxc-2vpv-mqc8","UBUNTU-CVE-2026-85068"],"status":"published","title":"NUT blazer_usb ippon_command stack info-leak via unzeroed char tmp[64] in OUT-direction usb_control_msg","description":"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.","severity":{"version":"3.1","score":2.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00151,"percentile":0.04268,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-457"],"published":"2026-11-05T22:57:24Z","modified":"2026-11-10T20:19:37Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"nut","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.0-7","2.8.1-1","2.8.1-2","2.8.1-3","2.8.1-3.1","2.8.1-3.1~exp1","2.8.1-3.1~exp2","2.8.1-3.2","2.8.1-3.3","2.8.1-4","2.8.1-4.1","2.8.1-5","2.8.3-1","2.8.3-2","2.8.3-3","2.8.4+really-1","2.8.4+really-2","2.8.4+really-2.1","2.8.4-1~exp1","2.8.5-1"]},{"source":"osv","ecosystem":"Debian:13","package":"nut","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.1-5","2.8.1-5+deb13u1","2.8.3-1","2.8.3-2","2.8.3-3","2.8.4+really-1","2.8.4+really-2","2.8.4+really-2.1","2.8.4-1~exp1","2.8.5-1"]},{"source":"osv","ecosystem":"Debian:14","package":"nut","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.1-5","2.8.3-1","2.8.3-2","2.8.3-3","2.8.4+really-1","2.8.4+really-2","2.8.4+really-2.1","2.8.4-1~exp1","2.8.5-1"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"nut","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.6.4-2.3ubuntu2","2.7.1-1ubuntu1","2.7.1-1ubuntu1.2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"nut","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.1-1ubuntu5","2.7.1-1ubuntu6","2.7.2-4ubuntu1","2.7.2-4ubuntu1.2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"nut","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.4-5ubuntu4","2.7.4-5.1ubuntu1","2.7.4-5.1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"nut","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.4-9ubuntu1","2.7.4-11ubuntu3","2.7.4-11ubuntu4"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"nut","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.7.4-13ubuntu5","2.7.4-14ubuntu1","2.7.4-14ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"nut","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.0-7","2.8.1-3ubuntu1","2.8.1-3.1ubuntu1","2.8.1-3.1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"nut","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.4+really-2","2.8.4+really-2ubuntu1","2.8.4+really-2.1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"nut","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.3-2","2.8.4+really-2"]}],"products":[{"vendor":"networkupstools","product":"nut"}],"references":[{"url":"https://github.com/networkupstools/nut/security/advisories/GHSA-fjxc-2vpv-mqc8","tags":["x_refsource_CONFIRM","exploit","advisory","report"]},{"url":"https://github.com/networkupstools/nut/pull/3529","tags":["x_refsource_MISC","fix","report"]},{"url":"https://github.com/networkupstools/nut/commit/30d56d4282f823949b40763d5c76461c7dd107b3","tags":["x_refsource_MISC","fix","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85068.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85068","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-85068","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-85068","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-85068","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-85068","title":"NUT blazer_usb ippon_command stack info-leak via unzeroed char tmp[64] in OUT-direction usb_control_msg","description":"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.","status":"published","published":"2026-11-05T22:57:24.731Z","modified":"2026-11-10T19:36:17.923Z","cvss":[{"version":"3.1","score":2.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-457"],"updated_at":"2026-11-10T22:18:29.471829Z"}],"euvd":[{"id":"EUVD-2026-117878","description":"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.","status":"published","published":"2026-11-05T22:57:24Z","modified":"2026-11-10T19:36:17Z","cvss":[{"version":"3.1","score":2.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-10T20:23:04.136377Z"}],"nvd":[{"id":"CVE-2026-85068","description":"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.","status":"published","published":"2026-11-05T23:17:00.947Z","modified":"2026-11-10T20:19:37.33Z","cvss":[{"version":"3.1","score":2.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-457"],"updated_at":"2026-11-10T22:21:31.83577Z"}],"osv":[{"id":"CVE-2026-85068","title":"NUT blazer_usb ippon_command stack info-leak via unzeroed char tmp[64] in OUT-direction usb_control_msg","description":"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.","status":"published","published":"2026-11-05T22:57:24.731Z","modified":"2026-11-12T02:48:31.072706413Z","cvss":[{"version":"3.1","score":2.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-457"],"updated_at":"2026-11-07T03:08:11.143006Z"},{"id":"DEBIAN-CVE-2026-85068","description":"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.","status":"published","published":"2026-11-05T23:17:00.947Z","modified":"2026-11-11T09:47:39.612194706Z","cvss":[{"version":"3.1","score":2.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-11T10:35:40.696585Z"},{"id":"UBUNTU-CVE-2026-85068","description":"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.","status":"published","published":"2026-11-06T00:00:00Z","modified":"2026-11-07T01:46:42.905773223Z","cvss":[{"version":"3.1","score":2.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-07T01:56:47.245871Z"}]}}