CVE-2024-21338

unknown KEV
Published 2024-03-04 ยท Modified 2024-03-04
CVSS v3
โ€”
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
2.5

Description

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.

CISA KEV

Vendor
Microsoft
Product
Windows
Due date
2024-03-25

Predictions

Exploit likelihood
99%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-51946 local windows
E1 Coders ยท 2024-04-02

Microsoft Windows 10.0.17763.5458 - Kernel Privilege Escalation

Source code queued for fetch โ€” refresh in a moment.
EDB-52275 local windows
Milad karimi ยท 2025-04-22

Microsoft Windows 11 - Kernel Privilege Escalation

Source code queued for fetch โ€” refresh in a moment.

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.