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CVE-2026-85068 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:2.4 LOWVector:CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/networkupstools/nut/commit/30d56d4282f823949b40763d5c76461c7dd107b3	[email protected]
https://github.com/networkupstools/nut/pull/3529	[email protected]
https://github.com/networkupstools/nut/security/advisories/GHSA-fjxc-2vpv-mqc8	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-457	Use of Uninitialized Variable	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes