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Arbitrary function execution in windows kernel context bypassing HVCI and CET given read and write primitives

0
Medium
Published: 09/22/2026 (09/22/2026, 15:51:05 UTC)
Source: Reddit Cybersecurity

Description

This report discusses a technique for arbitrary function execution in the Windows kernel context that bypasses Hypervisor-protected Code Integrity (HVCI) and Control-flow Enforcement Technology (CET), assuming the attacker has read and write primitives. The information is sourced from a Medium article shared on Reddit. No specific affected Windows versions or vendor advisories are provided. There is no indication of active exploitation in the wild or available patches.

Reddit Discussion

r/cybersecurity·posted by u/Fun-Humor7647
00

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/22/2026, 16:02:40 UTC

Technical Analysis

The described technique enables arbitrary function execution within the Windows kernel context by circumventing HVCI and CET protections, given that the attacker already possesses read and write capabilities. This method represents a binary exploitation approach that could potentially escalate privileges or execute code at a high privilege level. However, the report does not specify affected Windows versions, detailed technical mechanisms, or mitigation steps.

Potential Impact

If successfully leveraged, this technique could allow an attacker with existing read and write access to execute arbitrary functions in kernel mode, potentially leading to privilege escalation or bypass of kernel-level security features such as HVCI and CET. No evidence of active exploitation or widespread impact is indicated.

Defensive Guidance

No vendor advisory or patch information is available for this technique. Patch status is not yet confirmed—check official Microsoft advisories for updates. Since this technique requires existing read and write primitives, securing systems against initial compromise and maintaining up-to-date security patches remain critical.

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Technical Details

Source Type
reddit
Subreddit
cybersecurity
Reddit Score
0
Discussion Level
minimal
Content Source
reddit_link_post
Post Type
link
Newsworthiness Assessment
{"score":27,"reasons":["external_link","established_author","very_recent"],"isNewsworthy":true}
Has External Source
true
Trusted Domain
false

Threat ID: 6ab2a69df7a7c5410664aff8

Added to database: 09/22/2026, 16:02:37 UTC

Last enriched: 09/22/2026, 16:02:40 UTC

Last updated: 09/22/2026, 17:17:33 UTC

Views: 4

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