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No exploitation reportedFix available

CVE-2025-30388

No exploitation reported by the sources we read.

  • Published2025-05-13
  • WeaknessCWE-122 · CWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Heap-based buffer overflow in Windows Win32K - GRFX allows an unauthorized attacker to execute code locally.

Timeline

dates in UTC
  1. 2025-05-1317:16CVE publishedNVD

Versions per branch

NVD
Microsoft office long term servicing channel
BranchAffectedFixed in
2021.x= 2021no fix published
2024.x= 2024no fix published
Microsoft windows server 2008
BranchAffectedFixed in
—all versionsno fix published
—= r2no fix published
Microsoft 365 copilot
BranchAffectedFixed in
16.0< 16.0.18827.2000016.0.18827.20000

15 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA29 products

As microsoft, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Microsoft Office for Android
    Affected
    • ≥ 16.0.1, < 16.0.18827.20000fixed in 16.0.18827.20000custom
  • Microsoft Office for Universal
    Affected
    • ≥ 16.0.1, < 16.0.14326.22502fixed in 16.0.14326.22502custom
  • Microsoft Office LTSC for Mac 2021
    Affected
    • ≥ 16.0.1, < 16.97.25042725fixed in 16.97.25042725custom
  • Microsoft Office LTSC for Mac 2024
    Affected
    • ≥ 16.0.0, < 16.97.25042725fixed in 16.97.25042725custom
  • Microsoft Windows 10 Version 1507

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 10.0.10240.0, < 10.0.10240.21014fixed in 10.0.10240.21014custom
  • Microsoft Windows 10 Version 1607

    platforms: 32-bit Systems, x64-based Systems

    Affected
    • ≥ 10.0.14393.0, < 10.0.14393.8066fixed in 10.0.14393.8066custom

23 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-02-13

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2025-05-13
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-9j2q-rv22-36xm

Frequently asked questions

What is CVE-2025-30388?

Heap-based buffer overflow in Windows Win32K - GRFX allows an unauthorized attacker to execute code locally.

Is CVE-2025-30388 actively exploited?

Active exploitation of CVE-2025-30388 has not been confirmed. Its EPSS score was 4.4% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2025-30388?

CVE-2025-30388 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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