CVE-2022-28005Known exploitationPublic exploitNetwork attack vector

SYSTEM code execution via backslash directory traversal

Published May 6, 2022 · Updated Aug 3, 2024

Path traversal in 3CX Phone System Management Console before 18 Update 3 FINAL allows remote attackers to disclose server credentials. The /Electron/download route accepts backslash-containing path components and returns arbitrary server files without authentication. Disclosed credentials permit authenticated upload and replacement of a 3CX service binary, yielding code execution as NT AUTHORITY\SYSTEM on Windows.

CVSS severity9.8
Critical
EPSS probability6.48%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in 3CX Phone System Management Console before 18 Update 3 FINAL allows remote attackers to disclose server credentials. The /Electron/download route accepts backslash-containing path components and returns arbitrary server files without authentication. Disclosed credentials permit authenticated upload and replacement of a 3CX service binary, yielding code execution as NT AUTHORITY\SYSTEM on Windows.

The record

CVE
CVE-2022-28005
Published
May 6, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-522, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 6, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 19, 2023Exploitation reportedShadowserver honeypot exploitation attempts
  3. Aug 3, 2024Record 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 vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials
T1190Exploit Public-Facing Application

Public exploit references

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

Reported exploitation

Technologies

Your stack

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Your stack

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