CVE-2022-27169Public exploitNetwork attack vector

Directory disclosure via unauthenticated SecureBrowseFile requests

Published May 25, 2022 · Updated Apr 15, 2025

Missing authentication in Open Automation Software OAS Platform 16.00.0112 allows remote attackers to list filesystem directories through the OAS Engine. The SecureBrowseFile handler processes a properly formatted unauthenticated configuration message on TCP port 58727 and returns a directory listing for the requested path. Exposure is limited to paths readable by the account running the Engine, which defaults to the normal-privilege oasuser account on the tested installation.

CVSS severity7.5
High
EPSS probability1.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in Open Automation Software OAS Platform 16.00.0112 allows remote attackers to list filesystem directories through the OAS Engine. The SecureBrowseFile handler processes a properly formatted unauthenticated configuration message on TCP port 58727 and returns a directory listing for the requested path. Exposure is limited to paths readable by the account running the Engine, which defaults to the normal-privilege oasuser account on the tested installation.

The record

CVE
CVE-2022-27169
Published
May 25, 2022
Updated
Apr 15, 2025
Vendor
Open Automation Software
Product
OAS Platform
Classifications
CWE-306, T1083
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 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?

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  1. Affected versionversion=V16.00.0112

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open Automation Software · OAS Platformversion=V16.00.0112

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5Cisco TalosCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1083File and Directory Discovery

Public exploit references

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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