CVE-2024-30040

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2024-05-14. Federal remediation due 2024-06-04.

SSVC decision

• ExploitationactiveCISA reports credible evidence of active exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

3.93% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 89.9% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD analysis status

Analyzed. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2024-05-14 16:57Z2 YR AGO

Last updated

2026-10-07 17:48Z21 DAYS AGO

Reserved

2024-03-22

Assigning CNA

microsoft

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

Weaknesses

• CWE-20Improper Input ValidationClass

Data version

5.2

Document digest

333076cfd6904d9ba78061409f8deb6c5e350d89de05dc924d46f55a3dbf911c

• msrc.microsoft.comWindows MSHTML Platform Security Feature Bypass Vulnerabilityhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-30040vendor-advisory
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-30040government-resource