CVE-2023-27857 - CVE House
Back to Database
Status published High CVE-2023-27857

Rockwell Automation ThinManager ThinServer Heap-Based Buffer Overflow

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-27857

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Security researchers from Tenable reported this to Rockwell Automation.

References

More from Rockwell Automation

View All →
CVE-2025-9466
ArmorStart® LT - Multiple Denial-of-Service Vulnerabilities
High 8.7
CVE-2025-9465
ArmorStart® LT - Multiple Denial-of-Service Vulnerabilities
High 8.7
CVE-2025-9464
Rockwell Automation ArmorStart® LT - Multiple Denial-of-Service Vulnerabilities
High 8.7
CVE-2025-9437
Rockwell Automation ArmorStart® AOP Denial-of-Service Vulnerability
High 8.7
CVE-2025-9368
432ES-IG3 Series A Denial-of-Service Vulnerability
High 8.7

Affected Vendor

Rockwell Automation

View all reports →

Affected Software

ThinManager ThinServer
Vulnerable Versions:
6.x - 10.x, 11.0.0 - 11.0.5, 11.1.0 - 11.1.5, 11.2.0 - 11.2.6, 12.0.0 - 12.0.4, 12.1.0 - 12.1.5, 13.0.0 - 13.0.1

Timeline

Official Publish: March 22nd, 2023
Last Modified: October 21st, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-125

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1213 Data from Information Repositories
Collection
T1003 OS Credential Dumping
Credential Access
T1552 Unsecured Credentials
Credential Access