CVE-2024-21338

Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

Act

*SSVC

Descriptions

Windows Kernel Elevation of Privilege Vulnerability

Vulnerabilidad de elevación de privilegios del kernel de Windows

Microsoft Windows Kernel contains an exposed IOCTL with insufficient access control vulnerability within the IOCTL (input and output control) dispatcher in appid.sys that allows a local attacker to achieve privilege escalation.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

Single

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Act

Exploitation

Active

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2023-12-08 CVE Reserved
2024-02-13 CVE Published
2024-03-04 Exploited in Wild
2024-03-25 KEV Due Date
2024-04-02 First Exploit
2024-12-31 CVE Updated
2025-03-30 EPSS Updated

CWE

CWE-822: Untrusted Pointer Dereference

CAPEC

References (11)

URL	Tag	Source

URL	Date	SRC
https://packetstorm.news/files/id/177869	2024-04-02
https://www.exploit-db.com/exploits/51946	2024-04-02
https://github.com/varwara/CVE-2024-21338	2024-04-23
https://github.com/Crowdfense/CVE-2024-21338	2024-07-29
https://github.com/hakaioffsec/CVE-2024-21338	2024-04-16
https://github.com/Zombie-Kaiser/CVE-2024-21338-x64-build-	2024-05-22
https://github.com/UMU618/CVE-2024-21338	2024-04-17
https://github.com/tykawaii98/CVE-2024-21338_PoC	2024-11-20
https://github.com/hackyboiz/kcfg-bypass	2025-01-12
https://decoded.avast.io/janvojtesek/lazarus-and-the-fudmodule-rootkit-beyond-byovd-with-an-admin-to-kernel-zero-day	2024-05-29

URL	Date	SRC
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338	2024-05-29

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"		Windows 10 1809 Search vendor "Microsoft" for product "Windows 10 1809"				< 10.0.17763.5458 Search vendor "Microsoft" for product "Windows 10 1809" and version " < 10.0.17763.5458"		-		Affected
Microsoft Search vendor "Microsoft"		Windows 10 21h2 Search vendor "Microsoft" for product "Windows 10 21h2"				< 10.0.19044.4046 Search vendor "Microsoft" for product "Windows 10 21h2" and version " < 10.0.19044.4046"		-		Affected
Microsoft Search vendor "Microsoft"		Windows 10 22h2 Search vendor "Microsoft" for product "Windows 10 22h2"				< 10.0.19045.4046 Search vendor "Microsoft" for product "Windows 10 22h2" and version " < 10.0.19045.4046"		-		Affected
Microsoft Search vendor "Microsoft"		Windows 11 21h2 Search vendor "Microsoft" for product "Windows 11 21h2"				< 10.0.22000.2777 Search vendor "Microsoft" for product "Windows 11 21h2" and version " < 10.0.22000.2777"		-		Affected
Microsoft Search vendor "Microsoft"		Windows 11 22h2 Search vendor "Microsoft" for product "Windows 11 22h2"				< 10.0.22621.3155 Search vendor "Microsoft" for product "Windows 11 22h2" and version " < 10.0.22621.3155"		-		Affected
Microsoft Search vendor "Microsoft"		Windows 11 23h2 Search vendor "Microsoft" for product "Windows 11 23h2"				< 10.0.22631.3155 Search vendor "Microsoft" for product "Windows 11 23h2" and version " < 10.0.22631.3155"		-		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2019 Search vendor "Microsoft" for product "Windows Server 2019"				< 10.0.17763.5458 Search vendor "Microsoft" for product "Windows Server 2019" and version " < 10.0.17763.5458"		-		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2022 Search vendor "Microsoft" for product "Windows Server 2022"				< 10.0.20348.2322 Search vendor "Microsoft" for product "Windows Server 2022" and version " < 10.0.20348.2322"		-		Affected
Microsoft Search vendor "Microsoft"		Windows Server 2022 23h2 Search vendor "Microsoft" for product "Windows Server 2022 23h2"				<= 10.0.25398.709 Search vendor "Microsoft" for product "Windows Server 2022 23h2" and version " <= 10.0.25398.709"		-		Affected