CVE-2025-67826

SYSTEM privilege escalation via insecure named pipe

Published Dec 22, 2025 · Updated Dec 22, 2025

Local privilege escalation in K7 Ultimate Security 17.0.2045 allows local users to gain SYSTEM access via a named pipe. The product exposes a named pipe with insecure access controls and accepts unprivileged requests that can modify arbitrary Windows registry keys. A local unprivileged user on a default installation can use those registry writes to fully compromise the host as SYSTEM.

CVSS severity7.7
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local privilege escalation in K7 Ultimate Security 17.0.2045 allows local users to gain SYSTEM access via a named pipe. The product exposes a named pipe with insecure access controls and accepts unprivileged requests that can modify arbitrary Windows registry keys. A local unprivileged user on a default installation can use those registry writes to fully compromise the host as SYSTEM.

The record

CVE
CVE-2025-67826
Published
Dec 22, 2025
Updated
Dec 22, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-269, T1068, T1112
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 22, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1068Exploitation for Privilege Escalation
T1112Modify Registry

Public exploit references

No public exploit references are available in this record.

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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