CVE-2023-25396

SYSTEM privilege escalation via repair file redirection

Published Feb 8, 2023 · Updated Mar 25, 2025

Privilege escalation in Caphyon Advanced Installer 20.0 and earlier allows local users to gain SYSTEM access through MSI repair. The SYSTEM-level repair process creates a temporary file in a user-writable location, letting opportunistic locks and symbolic links redirect operations toward critical system files. A local unprivileged account must trigger repair and manipulate the file; exploitation permits replacement or removal of system components and full SYSTEM control.

CVSS severity7.8
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in Caphyon Advanced Installer 20.0 and earlier allows local users to gain SYSTEM access through MSI repair. The SYSTEM-level repair process creates a temporary file in a user-writable location, letting opportunistic locks and symbolic links redirect operations toward critical system files. A local unprivileged account must trigger repair and manipulate the file; exploitation permits replacement or removal of system components and full SYSTEM control.

The record

CVE
CVE-2023-25396
Published
Feb 8, 2023
Updated
Mar 25, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 8, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 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

7.8MITRECVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

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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