CVERadar
MEDIUM · CVSS 3.1 6.5Exploit-DBEPSS 22.60% (p98)Threat level 46

CVE-2024-21320: CVE-2024-21320: Windows Themes Spoofing Vulnerability

microsoft · windows 10 1507 · NVD published 2024-01-10 · posted 2025-03-22 · last modified 2026-06-17

What it is

Windows Themes Spoofing Vulnerability

WeaknessCWE-200
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N (source: [email protected])
ATT&CK tacticsCollection

Exploitation evidence

First exploit evidence seen: 2025-03-22 (earliest date across the sources below).

Exploited in the wild

No source on this site lists in-the-wild exploitation yet (CISA KEV, VulnCheck KEV).

Public exploit code

Exploit-DB

  • EDB-52092: Microsoft Windows - NTLM Hash Leak Malicious Windows Theme (2025-03-22)

GitHub proof-of-concept repositories below quality bar

1 public repositories from 1 accounts, first seen 2024-10-30.

Verify before running: public PoCs can be malicious. Read the code and only run it in an isolated lab. A PoC means exploit code is public, not that this CVE is exploited in the wild.

Sources: Exploit-DB (OffSec) · nomi-sec/PoC-in-GitHub.

Defend the Chain

The attack chain for CVE-2024-21320 laid across the MITRE ATT&CK Enterprise tactics. Solid cards come from the MITRE CTID KEV mappings; dashed cards are inferred by CVERadar from the CWE or description. Correct defences are real ATT&CK mitigations for that technique.

Threat level 46/100
Defender level 1 · 0 XP
Chain links broken: 0/1

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Stealth

Defense Impairment

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Pick a red technique card on the board, then choose the defence that stops it.

Defend against T1005 Data from Local System Inferred

Inferred from CWE CWE-200

How to fix it

Fixed versions

  • microsoft windows 10 1507: upgrade to 10.0.10240.20402 or later
  • microsoft windows 10 1607: upgrade to 10.0.14393.6614 or later
  • microsoft windows 10 1809: upgrade to 10.0.17763.5329 or later
  • microsoft windows 10 21h2: upgrade to 10.0.19044.3930 or later
  • microsoft windows 10 22h2: upgrade to 10.0.19045.3930 or later
  • microsoft windows 11 21h2: upgrade to 10.0.22000.2713 or later
  • microsoft windows 11 22h2: upgrade to 10.0.22621.3007 or later
  • microsoft windows 11 23h2: upgrade to 10.0.22631.3007 or later
  • microsoft windows server 2016: upgrade to 10.0.14393.6614 or later
  • microsoft windows server 2019: upgrade to 10.0.17763.5329 or later
  • microsoft windows server 2022: upgrade to 10.0.20348.2227 or later

Derived from the NVD CPE configuration (versionEndExcluding / versionEndIncluding). Always confirm with the vendor advisory.

Vendor advisories and patches

MITRE ATT&CK mitigations for this chain

  • M1057 Data Loss Prevention (for T1005) : Data loss prevention can restrict access to sensitive data and detect sensitive data that is unencrypted.

Detection Generic guidance

  • Collection: Watch for bulk reads of databases, file shares or mailboxes by the affected service.

Response checklist Generic guidance

  1. Inventory: find every instance of the affected product and version (include internet-facing and forgotten ones).
  2. Patch or mitigate per the vendor advisory; if you cannot patch, remove internet exposure or apply the vendor workaround.
  3. Assume compromise if the system was exposed before patching: hunt for the indicators in the advisory and review logs back to the disclosure date.
  4. Rotate credentials and secrets stored on or used by the affected system if compromise cannot be ruled out.

Sources