CVE-2022-4956Public exploit

SYSTEM privilege escalation via GdiPlus.dll search order

Published Sep 30, 2023 · Updated Aug 3, 2024

DLL search-order hijacking in Caphyon Advanced Installer 19.7 allows local users to execute code with SYSTEM privileges. A generated elevated setup executable loads GdiPlus.dll from a user-writable .Local WinSxS directory before the protected Windows copy. A low-privileged user must plant a crafted DLL beside an affected installer and wait for the installer to run; successful loading grants SYSTEM execution.

CVSS severity7.8
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

DLL search-order hijacking in Caphyon Advanced Installer 19.7 allows local users to execute code with SYSTEM privileges. A generated elevated setup executable loads GdiPlus.dll from a user-writable .Local WinSxS directory before the protected Windows copy. A low-privileged user must plant a crafted DLL beside an affected installer and wait for the installer to run; successful loading grants SYSTEM execution.

The record

CVE
CVE-2022-4956
Published
Sep 30, 2023
Updated
Aug 3, 2024
Vendor
Caphyon
Product
Advanced Installer
Classifications
CWE-427, T1574.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=19.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Caphyon · Advanced Installerversion=19.7

Published CVSS scores

7.8VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.8VulDBAV:L/AC:L/Au:S/C:C/I:C/A:C

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-427Uncontrolled Search Path Element
T1574.001DLL Search Order Hijacking

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo