CVE-2025-64699Public exploit

Raw disk access via NULL volume DACL

Published Dec 31, 2025 · Updated Dec 31, 2025

Incorrect access control in SevenCs ORCA G2 2.0.1.35 allows local users to read or modify raw disk data through an unprotected volume device. The SYSTEM-level regService applies DACL_SECURITY_INFORMATION to the Windows volume device without first adding a DACL to its security descriptor, producing a NULL DACL that grants broad access. A standard local account must trigger the named-pipe request path; subsequent raw reads expose protected data, while raw writes can corrupt disk structures and interrupt the system.

CVSS severity7.8
High
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect access control in SevenCs ORCA G2 2.0.1.35 allows local users to read or modify raw disk data through an unprotected volume device. The SYSTEM-level regService applies DACL_SECURITY_INFORMATION to the Windows volume device without first adding a DACL to its security descriptor, producing a NULL DACL that grants broad access. A standard local account must trigger the named-pipe request path; subsequent raw reads expose protected data, while raw writes can corrupt disk structures and interrupt the system.

The record

CVE
CVE-2025-64699
Published
Dec 31, 2025
Updated
Dec 31, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-732, T1561.002, T1006
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 31, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 31, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
T1561.002Disk Wipe: Disk Structure Wipe
T1006Direct Volume Access

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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