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7.8
HIGH CVSS 3.1
CVE-2026-24291
Windows Accessibility Infrastructure (ATBroker.exe) Elevation of Privilege Vulnerability
Overview
Description

Incorrect permission assignment for critical resource in Windows Accessibility Infrastructure (ATBroker.exe) allows an authorized attacker to elevate privileges locally.

Details
INFO

Published Date :

March 10, 2026, 6:18 p.m.

Last Modified :

March 19, 2026, 5:16 p.m.

Remotely Exploit :

No

Source :

[email protected]
Impact
Affected Products

The following products are affected by CVE-2026-24291 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft windows_server_2012
2 Microsoft windows_server_2016
3 Microsoft windows_server_2019
4 Microsoft windows_10_1607
5 Microsoft windows_10_1809
6 Microsoft windows_10_21h2
7 Microsoft windows_10_22h2
8 Microsoft windows_server_2022
9 Microsoft windows_11_23h2
10 Microsoft windows_server_2022_23h2
11 Microsoft windows_server_23h2
12 Microsoft windows_server_2012_r2
13 Microsoft windows_11_24h2
14 Microsoft windows_server_2025
15 Microsoft windows_11_25h2
16 Microsoft windows_11_26h1
: Total Affected Vendor : 1 | Products : 16
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH [email protected]
Solution
Address incorrect permission assignment in ATBroker.exe to prevent privilege escalation.
  • Apply vendor-provided security updates.
  • Review and correct resource permissions.
  • Restrict local administrator privileges.
  • Monitor for unauthorized access attempts.
Public PoC/Exploit Available at Github

CVE-2026-24291 has a 13 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2026-24291.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24291 Vendor Advisory
https://github.com/mdsecactivebreach/RegPwn
https://www.mdsec.co.uk/2026/03/rip-regpwn/
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-24291 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-24291 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
CCIEVoice2009/RegPwn-2026-Microsoft

None

C#

Updated: 1 week, 2 days ago
0 stars 0 fork 0 watcher
Born at : March 28, 2026, 5:42 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
uname1able/CVE-2026-24291

None

C# C++

Updated: 1 week, 4 days ago
0 stars 0 fork 0 watcher
Born at : March 26, 2026, 1:18 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
tracyliving606/RegPwn

Exploit Windows local privilege escalation on clients and servers using tested code for CVE-2026-24291 across multiple Windows versions

assembly capture-the-flag cloudflare containers defcon developer free-domain handshakes learn-regex opencontainers pwntools python regular-expression shellcode-development shellcoding wargame website wpa-psk

C#

Updated: 1 day, 15 hours ago
1 stars 0 fork 0 watcher
Born at : March 26, 2026, 4:38 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
Miiden/Compiled-Tools

A place to store tools

Updated: 2 weeks ago
0 stars 0 fork 0 watcher
Born at : March 23, 2026, 9:26 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
salzek/PrivCheck

Windows Privilege Escalation Checker - Patch gap + misconfiguration analysis

PowerShell

Updated: 2 weeks, 1 day ago
0 stars 0 fork 0 watcher
Born at : March 22, 2026, 8:43 a.m. This repo has been linked 10 different CVEs too.
Profile Photo
lennertdefauw/CVE-2026-24291

Windows privilege escalation using RegPwn

Go C#

Updated: 2 weeks, 3 days ago
2 stars 0 fork 0 watcher
Born at : March 19, 2026, 9:37 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
n0isegat3/RegPwnBRc4BOF

Brute Ratel C4 BOF of the CVE-2026-24291

Makefile C

Updated: 2 weeks, 2 days ago
2 stars 0 fork 0 watcher
Born at : March 18, 2026, 4:34 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
LennertDefauw1/RegPwn

None

C# Go

Updated: 2 weeks, 5 days ago
0 stars 0 fork 0 watcher
Born at : March 18, 2026, 10:50 a.m. This repo has been linked 1 different CVEs too.
Profile Photo
Flangvik/RegPwnBOF

Bof of RegPwn by MDSec

Makefile C

Updated: 2 weeks, 3 days ago
83 stars 5 fork 5 watcher
Born at : March 15, 2026, 11:23 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
mdsecactivebreach/RegPwn

None

C#

Updated: 2 weeks, 5 days ago
101 stars 10 fork 10 watcher
Born at : March 13, 2026, 3:06 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
killvxk/gitweekly

收集各种有趣的github项目

C C++ PowerShell Python Shell

Updated: 2 days, 23 hours ago
58 stars 7 fork 7 watcher
Born at : July 22, 2025, 4:39 p.m. This repo has been linked 4 different CVEs too.
Profile Photo
giterlizzi/secdb-feeds

SecDB - Security Feeds

cve security-feeds vulnerability

Updated: 2 weeks, 4 days ago
0 stars 0 fork 0 watcher
Born at : July 1, 2022, 8:37 p.m. This repo has been linked 109 different CVEs too.
Profile Photo
nomi-sec/PoC-in-GitHub

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 1 day, 13 hours ago
7620 stars 1243 fork 1243 watcher
Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 766 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2026-24291 vulnerability anywhere in the article.

  • Daily CyberSecurity
Proof-of-Concept Released: Public Exploit Details for Windows Error Reporting LPE (CVE-2026-20817)

Researcher Clément Labro published a deep-dive analysis and a functional Proof-of-Concept (PoC) exploit for a critical security flaw in the Windows Error Reporting (WER) service. The vulnerability, tr ... Read more

Published Date: Mar 27, 2026 (1 week, 4 days ago)
  • The Hacker News
⚡ Weekly Recap: CI/CD Backdoor, FBI Buys Location Data, WhatsApp Ditches Numbers & More

Another week, another reminder that the internet is still a mess. Systems people thought were secure are being broken in simple ways, showing many still ignore basic advisories. This edition covers a ... Read more

Published Date: Mar 23, 2026 (2 weeks ago)
  • Daily CyberSecurity
PoC Exploit Publicly Disclosed: Apple Deploys First-Ever Background Security Patch for Cross-Origin Flaw

Apple has broken new ground in its defensive strategy, utilizing a “Background Security Improvements” feature to deliver an out-of-band fix for a significant cross-origin vulnerability. The flaw, trac ... Read more

Published Date: Mar 21, 2026 (2 weeks, 3 days ago)
  • Daily CyberSecurity
PoC Exploit Publicly Disclosed: Windows ‘libarchive’ Flaw Leaks NetNTLMv2 Hashes

Security researchers Len Sadowski and Oğuz Bektaş have publicly pulled back the curtain on a vulnerability within Windows’ implementation of libarchive. The flaw, tracked as CVE-2025-59284, demonstrat ... Read more

Published Date: Mar 20, 2026 (2 weeks, 3 days ago)
  • Daily CyberSecurity
PoC Exploit Publicly Disclosed: ‘RegPwn’ Flaw Grants SYSTEM Access via Windows Accessibility

A newly discovered vulnerability, dubbed RegPwn, has pulled back the curtain on a significant security gap in the Windows Accessibility Infrastructure. Tracked as CVE-2026-24291, this local elevation ... Read more

Published Date: Mar 18, 2026 (2 weeks, 5 days ago)
  • CybersecurityNews
‘RegPwn’ Windows Registry Vulnerability Enables Full System Access to Attackers

RegPwn Windows Registry Vulnerability A high-severity Windows vulnerability dubbed “RegPwn” (CVE-2026-24291) is an elevation-of-privilege flaw that allows low-privileged users to gain full SYSTEM acce ... Read more

Published Date: Mar 18, 2026 (2 weeks, 5 days ago)
  • Help Net Security
Microsoft patches 80+ vulnerabilities, six flagged as “more likely” to be exploited

On March 2026 Patch Tuesday, Microsoft addressed 80+ vulnerabilities affecting its software and cloud services. Of these, two were publicly disclosed, but not actively exploited. Privilege escalation ... Read more

Published Date: Mar 11, 2026 (3 weeks, 5 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2026-24291 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Mar. 19, 2026

    Action Type Old Value New Value
    Added Reference https://github.com/mdsecactivebreach/RegPwn
    Added Reference https://www.mdsec.co.uk/2026/03/rip-regpwn/
  • Initial Analysis by [email protected]

    Mar. 13, 2026

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.17763.8511 *cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.17763.8511 *cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:* versions up to (excluding) 10.0.19044.7058 *cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.19044.7058 *cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.19044.7058 *cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:* versions up to (excluding) 10.0.19045.7058 *cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.19045.7058 *cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.19045.7058 *cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:* versions up to (excluding) 10.0.22631.6783 *cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.22631.6783 *cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:* versions up to (excluding) 10.0.26100.7979 *cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.26100.7979 *cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:* versions up to (excluding) 10.0.26200.7979 *cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.26200.7979 *cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* versions up to (excluding) 10.0.28000.1719 *cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.28000.1719 *cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.14393.8957 *cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.17763.8511 *cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.20348.4830 *cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.25398.2207 *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.14393.8957 *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.14393.8957 *cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.26100.32463
    Added Reference Type Microsoft Corporation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24291 Types: Vendor Advisory
  • New CVE Received by [email protected]

    Mar. 10, 2026

    Action Type Old Value New Value
    Added Description Incorrect permission assignment for critical resource in Windows Accessibility Infrastructure (ATBroker.exe) allows an authorized attacker to elevate privileges locally.
    Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-732
    Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-24291
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CVSS
Vulnerability Scoring Details
Base CVSS Score: 7.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact