CVE-2025-30397Scripting Engine Memory Corruption Vulnerability
- 7.5HighCVSS base score
- 27.5%Exploitation in 30 daysEPSS · top 1.9% of all CVEs
- YesKnown exploitedin CISA's KEV since 13 May 2025
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
Access of resource using incompatible type ('type confusion') in Microsoft Scripting Engine allows an unauthorized attacker to execute code over a network.
Exploited in the wild
CISA lists this vulnerability in its Known Exploited Vulnerabilities catalog as Microsoft Windows Scripting Engine Type Confusion Vulnerability.
- Added
- 13 May 2025
- Fix due (US federal)
- 3 Jun 2025
- Used by ransomware
- Not known
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
ENISA's EU Vulnerability Database lists it as exploited, from CISA's KEV, since 13 May 2025.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it. CISA's SSVC rates its exploitation: it is being exploited.
Show the exploits1
Exploit-DB1 entry
- Microsoft Windows Server 2025 JScript Engine - Remote Code Execution (RCE) (Exploit-DB entry) (opens in a new tab)
EDB-ID 52315remote, windowspublished 5 Jun 2025Not verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By microsoft
- 53 days later
· 53 days later
Published
Added to CISA KEV
Known exploited in the wild
- 10 months later
· 10 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoftCNA (assigner) | 3.1 | High7.5 | 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 |
| NVDNVD · Analyzed | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 27.5% · top 1.9% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: active · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
Microsoft · Windows 10 Version 1507
- affected 10.0.10240.0 – < 10.0.10240.21014
Microsoft · Windows 10 Version 1607
- affected 10.0.14393.0 – < 10.0.14393.8066
Microsoft · Windows 10 Version 1809
- affected 10.0.17763.0 – < 10.0.17763.7314
Microsoft · Windows 10 Version 21H2
- affected 10.0.19044.0 – < 10.0.19044.5854
Microsoft · Windows 10 Version 22H2
- affected 10.0.19045.0 – < 10.0.19045.5854
Microsoft · Windows 11 version 22H2
- affected 10.0.22621.0 – < 10.0.22621.5335
Microsoft · Windows 11 version 22H3
- affected 10.0.22631.0 – < 10.0.22631.5335
Microsoft · Windows 11 Version 23H2
- affected 10.0.22631.0 – < 10.0.22631.5335
Microsoft · Windows 11 Version 24H2
- affected 10.0.26100.0 – < 10.0.26100.4061
Microsoft · Windows Server 2008 R2 Service Pack 1
- affected 6.1.7601.0 – < 6.1.7601.27729
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)
- affected 6.1.7601.0 – < 6.1.7601.27729
Microsoft · Windows Server 2008 Service Pack 2
- affected 6.0.6003.0 – < 6.0.6003.23279
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)
- affected 6.0.6003.0 – < 6.0.6003.23279
Microsoft · Windows Server 2012
- affected 6.2.9200.0 – < 6.2.9200.25475
Microsoft · Windows Server 2012 (Server Core installation)
- affected 6.2.9200.0 – < 6.2.9200.25475
Microsoft · Windows Server 2012 R2
- affected 6.3.9600.0 – < 6.3.9600.22577
Microsoft · Windows Server 2012 R2 (Server Core installation)
- affected 6.3.9600.0 – < 6.3.9600.22577
Microsoft · Windows Server 2016
- affected 10.0.14393.0 – < 10.0.14393.8066
Microsoft · Windows Server 2016 (Server Core installation)
- affected 10.0.14393.0 – < 10.0.14393.8066
Microsoft · Windows Server 2019
- affected 10.0.17763.0 – < 10.0.17763.7314
Microsoft · Windows Server 2019 (Server Core installation)
- affected 10.0.17763.0 – < 10.0.17763.7314
Microsoft · Windows Server 2022
- affected 10.0.20348.0 – < 10.0.20348.3692
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)
- affected 10.0.25398.0 – < 10.0.25398.1611
Microsoft · Windows Server 2025
- affected 10.0.26100.0 – < 10.0.26100.4061
Microsoft · Windows Server 2025 (Server Core installation)
- affected 10.0.26100.0 – < 10.0.26100.4061
References
References4
- Scripting Engine Memory Corruption Vulnerability (opens in a new tab)vendor-advisorypatch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-30397 (opens in a new tab)government-resource
- https://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-microsoft-scripting-engine-mitigation-script (opens in a new tab)
- https://www.vicarius.io/vsociety/posts/cve-2025-30397-type-confusion-vulnerability-in-microsoft-scripting-engine-detection-script (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- CISA KEV catalog (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-14411 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-30397)Record last updated .