CVE-2022-24139

Privilege escalation via named-pipe client impersonation

Published Jul 6, 2022 · Updated Jul 9, 2026

Local privilege escalation in IObit Advanced SystemCare 15 allows local users to obtain another user's token through AscService.exe. AscService.exe connects to an attacker-created pipe before creating its own, allowing ImpersonateNamedPipeClient() to capture the connecting user's token. Exploitation requires a local user holding SeImpersonatePrivilege and can elevate an administrator to SYSTEM or a local administrator to domain administrator.

CVSS severity7.8
High
EPSS probability0.37%
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 IObit Advanced SystemCare 15 allows local users to obtain another user's token through AscService.exe. AscService.exe connects to an attacker-created pipe before creating its own, allowing ImpersonateNamedPipeClient() to capture the connecting user's token. Exploitation requires a local user holding SeImpersonatePrivilege and can elevate an administrator to SYSTEM or a local administrator to domain administrator.

The record

CVE
CVE-2022-24139
Published
Jul 6, 2022
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-668, T1134.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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

7.2NIST National Vulnerability DatabaseAV:L/AC:L/Au:N/C:C/I:C/A:C
7.8NIST National Vulnerability DatabaseCVSS: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.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-668Exposure of Resource to Wrong Sphere
T1134.001Access Token Manipulation: Token Impersonation/Theft

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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