CVE-2022-40298

SYSTEM shell via inherited installer permissions

Published Sep 22, 2022 · Updated May 27, 2025

Privilege escalation in Crestron AirMedia for Windows before 5.5.1.84 allows local users to gain a SYSTEM-level shell. The Windows installation leaves security-critical resources with inherited permissions, and a repair operation processes those resources with SYSTEM privileges. A low-privileged local account is sufficient to initiate the repair, granting control of the Windows host.

CVSS severity8.8
High
EPSS probability0.62%
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 Crestron AirMedia for Windows before 5.5.1.84 allows local users to gain a SYSTEM-level shell. The Windows installation leaves security-critical resources with inherited permissions, and a repair operation processes those resources with SYSTEM privileges. A low-privileged local account is sufficient to initiate the repair, granting control of the Windows host.

The record

CVE
CVE-2022-40298
Published
Sep 22, 2022
Updated
May 27, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-732, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 22, 2022CVE publishedPublication date reported by the CVE source.
  2. May 27, 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

8.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/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-732Incorrect Permission Assignment for Critical Resource
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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