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CVE-2025-55698· NVD / CVE Program· CNA microsoft

DirectX Graphics Kernel Denial of Service Vulnerability

Null pointer dereference in Windows DirectX allows an authorized attacker to deny service over a network.

HighCVSS 7.7 · v3.1—No exploit Fix available
Published
Oct 14, 2025
Updated
Jun 17, 2026
EPSS
1.2% · 67th percentile
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Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · microsoft
7.7
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
microsoftwindows 11 24h2
microsoftwindows 11 25h2
microsoftwindows server 2025

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • microsoft windows server 2025up to 10.0.26100.6899 inclusive

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

  • Microsoft Windows 11 Version 24H2

    • 10.0.26100.0 and later · before 10.0.26100.6899affected

  • Microsoft Windows 11 Version 25H2

    • 10.0.26200.0 and later · before 10.0.26200.6899affected

  • Microsoft Windows Server 2025

    • 10.0.26100.0 and later · before 10.0.26100.6899affected

  • Microsoft Windows Server 2025 (Server Core installation)

    • 10.0.26100.0 and later · before 10.0.26100.6899affected

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2025-60710Host Process for Windows Tasks Elevation of Privilege VulnerabilityKEV
    62This week
  • CVE-2025-50165Windows Graphics Component Remote Code Execution Vulnerability
    42Plan
  • CVE-2025-21311Windows NTLM V1 Elevation of Privilege Vulnerability
    40Plan
  • CVE-2026-50487Windows DNS Client Elevation of Privilege Vulnerability
    39Monitor
  • CVE-2026-62744Microsoft Windows Media Foundation Remote Code Execution Vulnerability
    35Monitor
  • CVE-2026-85877Windows Print Spooler Remote Code Execution Vulnerability
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Windows 11 Version 24H2 for ARM64-based Systems10.0.26100.6899 · KB5066835Microsoft (MSRC)
Windows 11 Version 24H2 for x64-based Systems10.0.26100.6899 · KB5066835Microsoft (MSRC)
Windows 11 Version 25H2 for ARM64-based Systems10.0.26200.6899 · KB5066835Microsoft (MSRC)
Windows 11 Version 25H2 for x64-based Systems10.0.26200.6899 · KB5066835Microsoft (MSRC)
Windows Server 202510.0.26100.6899 · KB5066835Microsoft (MSRC)
Windows Server 2025 (Server Core installation)10.0.26100.6899 · KB5066835Microsoft (MSRC)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-4969498 days apartMicrosoft Brokering File System Elevation of Privilege Vulnerability
    31Monitor
  • CVE-2026-50315273 days apartWindows Image Acquisition Elevation of Privilege Vulnerability
    31Monitor
  • CVE-2026-40405210 days apartWindows TCP/IP Denial of Service Vulnerability
    30Monitor
  • CVE-2026-69744329 days apartWindows Kerberos Denial of Service Vulnerability
    30Monitor
  • CVE-2025-29838154 days apartWindows ExecutionContext Driver Elevation of Privilege Vulnerability
    28Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-476 · NULL Pointer Dereference

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records