High severity · published Dec 22, 2025
CVE-2025-67826
An issue was discovered in K7 Ultimate Security 17.0.2045
7.7
CVSS
0.1%
EPSS
No
On KEV
Description
An issue was discovered in K7 Ultimate Security 17.0.2045. A Local Privilege Escalation (LPE) vulnerability in the K7 Ultimate Security antivirus can be exploited by a local unprivileged user on default installations of the product. Insecure access to a named pipe allows unprivileged users to edit any registry key, leading to a full compromise as SYSTEM.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KU
K7 Ultimate Security · K7computing
17.0.2045 · source: NVD
In the news
VulnerabilityHigh
K7 Antivirus: Named pipe abuse, registry manipulation and privilege escalation (CVE-2025-67826)
Exploitation of the K7 antivirus (CVE-2025-67826), from the vulnerability discovery to the retro-analysis of its key components.
Dec 1, 2025·Quarkslab Blog
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-67826
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-67826
Vendor Advisory
https://support.k7computing.com/index.php?/selfhelp/view-article/Advisory-issued-on-22nd-Dec-2025
Product
https://www.k7computing.com/
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