HOMEVULNERABILITIESCVE-2023-27856
HIGH

CVE-2023-27856

CWE-22Published: March 22, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

In affected versions, path traversal exists when processing a message of type 8

in Rockwell Automation's ThinManager ThinServer.

An unauthenticated remote attacker can exploit this vulnerability to download arbitrary files on the disk drive where ThinServer.exe is installed.

NVD Source

Technical Analysis

CVE-2023-27856 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

rockwellautomation1 product(s)
thinmanager
Source: NVD CPE · 3 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138640
ADVISORYhttps://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138640

All References (2)

→
https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138640Permissions Required · Vendor Advisory
→
https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1138640Permissions Required · Vendor Advisory

Quick Facts

CVE IDCVE-2023-27856
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-22
CISA KEVNo
Affected1 vendor(s)
PublishedMar 22, 2023

Related CVEs (CWE-22)

CVE-2013-6221
10.0
CVE-2015-0779
10.0
CVE-2024-37902
10.0
CVE-2011-5127
10.0
CVE-2011-2653
10.0
CVE-2010-5324
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-27856 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2023-27856·NVD