CVE-2025-30388
HIGHCVSS 7.8/10EPSS 3.36%
Last modified
CVE-2025-30388 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Heap-based buffer overflow in Windows Win32K - GRFX allows an unauthorized attacker to execute code locally.. EPSS estimates a 3.36% chance of exploitation in the next 30 days.
Description
Heap-based buffer overflow in Windows Win32K - GRFX allows an unauthorized attacker to execute code locally.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Microsoft | 365 Copilot | < 16.0.18827.20000 | — |
| Microsoft | Office | < 16.0.14326.22502 | — |
| Microsoft | Office Long Term Servicing Channel | 2021 | — |
| Microsoft | Office Long Term Servicing Channel | 2024 | — |
| Microsoft | Windows 10 1507 | < 10.0.10240.21014 | — |
| Microsoft | Windows 10 1607 | < 10.0.14393.8066 | — |
| Microsoft | Windows 10 1809 | < 10.0.17763.7314 | — |
| Microsoft | Windows 10 21h2 | < 10.0.19044.5854 | — |
| Microsoft | Windows 10 22h2 | < 10.0.19045.5854 | — |
| Microsoft | Windows 11 22h2 | < 10.0.22621.5335 | — |
| Microsoft | Windows 11 23h2 | < 10.0.22631.5335 | — |
| Microsoft | Windows 11 24h2 | < 10.0.26100.4061 | — |
| Microsoft | Windows Server 2008 | All versions | Sp2 |
| Microsoft | Windows Server 2008 | r2 | Sp1 |
| Microsoft | Windows Server 2012 | All versions | — |
| Microsoft | Windows Server 2016 | < 10.0.14393.8066 | — |
| Microsoft | Windows Server 2019 | < 10.0.17763.7314 | — |
| Microsoft | Windows Server 2022 | < 10.0.20348.3692 | — |
| Microsoft | Windows Server 2022 23h2 | < 10.0.25398.1611 | — |
| Microsoft | Windows Server 2025 | < 10.0.26100.4061 | — |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-30388?
Heap-based buffer overflow in Windows Win32K - GRFX allows an unauthorized attacker to execute code locally.
How severe is CVE-2025-30388?
CVE-2025-30388 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 3.36% probability of exploitation in the next 30 days.
How do I fix CVE-2025-30388?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2025
- CVE-2025-30382Deserialization of untrusted data in Microsoft Office ShareP…7.8
- CVE-2025-30383Access of resource using incompatible type ('type confusion'…7.8
- CVE-2025-30384Deserialization of untrusted data in Microsoft Office ShareP…7
- CVE-2025-30385Use after free in Windows Common Log File System Driver allo…7.8
- CVE-2025-30386Use after free in Microsoft Office allows an unauthorized at…7.8
- CVE-2025-30387Improper limitation of a pathname to a restricted directory …9.8
- CVE-2025-30389Improper authorization in Azure Bot Framework SDK allows an …9.8
- CVE-2025-3039A vulnerability was found in code-projects Payroll Managemen…8.8
- CVE-2025-30390Improper authorization in Azure allows an authorized attacke…8.8
- CVE-2025-30391Improper input validation in Microsoft Dynamics allows an un…7.5
- CVE-2025-30392Improper authorization in Azure Bot Framework SDK allows an …9.8
- CVE-2025-30393Use after free in Microsoft Office Excel allows an unauthori…7.8
Are you affected by CVE-2025-30388?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST