PT-2026-32716 · Microsoft · Windows Boot Loader+1

Alon Leviev · Published 2026-04-14 · Updated 2026-04-20 · CVE-2026-0390

Positive Technologies (AI Summary)

CVSS v2.0

6.8

Medium

Base vector

AV:L/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Windows Boot Loader (affected versions not specified)

Description Reliance on untrusted inputs in a security decision allows an authorized attacker to bypass a security feature locally.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-807

Related Identifiers

BDU:2026-05482

CVE-2026-0390

Affected Products

Windows

Windows Boot Loader

References · 7

• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-0390 · Security Note
• https://bdu.fstec.ru/vul/2026-05482 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-0390 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0390 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-0390 · Vendor Advisory
• https://twitter.com/CVEnew/status/2045112952743927845 · Twitter Post
• https://reddit.com/r/privacychain/comments/1sqr32i/field_note_23_firmware_sovereignty_hardening_the · Reddit Post