CVE-2025-30397

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2025-05-13. Federal remediation due 2025-06-03.

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

26.83% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 97.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/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

2025-05-13 16:59Z1 YR AGO

Last updated

2026-02-26 18:28Z6 MO AGO

Reserved

2025-03-21

Assigning CNA

microsoft

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-843Access of Resource Using Incompatible Type ('Type Confusion')Base

Data version

5.2

Document digest

6c06ddf40844553ab91ab6ddb4b26e3965422e833618174c8a986ab385333ee9

• msrc.microsoft.comScripting Engine Memory Corruption Vulnerabilityhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30397vendor-advisorypatch
• www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-30397government-resource
• www.vicarius.iohttps://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-microsoft-scripting-engine-mitigation-script
• www.vicarius.iohttps://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-microsoft-scripting-engine-detection-script