Rockwell Automation ThinManager ThinServer Heap-Based Buffer Overflow

published 2023-03-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-31592

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 18.3%; EPSS 18.3% chance of exploitation in 30 days, percentile 97%
public exploits: 0; none known

In affected versions, a heap-based buffer over-read condition occurs when the message field indicates more data than is present in the message field

in Rockwell Automation's ThinManager ThinServer. An unauthenticated remote attacker can exploit this vulnerability to crash ThinServer.exe due to a read access violation.

Patch / fix

fixed in 1

rockwellautomation thinmanager 11.0.5, 11.1.5, 11.2.6, 12.0.3, 12.1.4

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-23-080-06 updated 2023-03-31 cvss 7.5

Rockwell Automation ThinManager

Rockwell Automation ThinManager ThinServer >= 6.x, <= 10.x, >= 11.0.0, <= 11.0.5, >= 11.1.0, <= 11.1.5, >= 11.2.0, <= 11.2.6
affected: fixed in v11.0.6

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-10-15)

Exploit prediction

18.34% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Rockwell Automation ThinManager ThinServer

Classification

Weakness

CWE-125 Out-of-bounds Read

References

rockwellautomation.custhelp.com /app/answers/answer_view/a_id/1138640
vendor-advisory

Sources

CVE List CVE-2023-27857
NVD CVE-2023-27857

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary