Microsoft Windows MSHTML Platform Security Feature Bypass Vulnerability
Windows MSHTML Platform Security Feature Bypass Vulnerability
What happened
Windows MSHTML Platform Security Feature Bypass Vulnerability
CISA lists it as exploited, added 14 May 2024.
Does it affect you
Names Microsoft Windows Server. Enter the product and version you run to place it against the affected range the vendor published.
What to do
- Apply the vendor patch named in this advisory.
msrc.microsoft.com - Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
cisa.gov
CISA’s notes for this entry:
Affected, as published to NVD
- ms-winserver
- Microsoft Windows Server: everything below 10.0.14393.6981
The record
- NVD status
- Analyzed
- Published
- 14 May 2024, last modified 17 Jun 2026 (NVD)
- Severity
- CVSS 3.1 base score 8.8, High — computed here from the vector; NVD states 8.8.
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness
- CWE-20 Improper Input Validation (NVD; names by MITRE)
- Exploitation
- Listed in CISA’s Known Exploited Vulnerabilities catalogue since 14 May 2024; federal remediation due 04 Jun 2024. CISA entry
- Exploit probability
- EPSS 3.9%, 90th percentile — FIRST, scored 23 Oct 2026. FIRST EPSS
- Vendor
- Microsoft · Windows (CISA)
References on the NVD record
- msrc.microsoft.com/update-guide/vulnerability/CVE-2024-30040PatchVendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-30040US Government Resource
Sources
The verdict above is computed from the products and versions you entered and the affected ranges the vendor published to NVD. It does not inspect your environment, and this site never reports a product as unaffected: why.