# CVE-2025-12768: Rockwell Automation FactoryTalk Historian Machine Edition out-of-bounds write

Source: https://junglewise.ai/threats/cve-2025-12768-rockwell-automation-factorytalk-historian-machine-edition-out-of  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-01. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2025-12768 · Severity: info · CVSS 8 · Published 2026-09-01

FactoryTalk Historian Machine Edition is an embedded data historian for industrial automation controllers that logs and retrieves time-series process data. An attacker with basic system access could exploit an out-of-bounds write vulnerability to run arbitrary code on affected devices, potentially compromising production systems and operational data integrity.

Vendors: [Rockwell Automation](https://junglewise.ai/threats/vendors/rockwell-automation).

## Quick answers

**Is CVE-2025-12768 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-12768 being exploited in the wild.

**How severe is CVE-2025-12768?** Informational severity, with a CVSS score of 8, published 1 September 2026.

**Which products and versions are affected?** Rockwell Automation FactoryTalk Historian Machine Edition Series B 5.202, Series C 7.101.

**Is there a fix for CVE-2025-12768?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2025-12768 attacked?** It is attacked with local access.

**Am I affected by CVE-2025-12768?** Check whether you run Rockwell Automation FactoryTalk Historian Machine Edition at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an out-of-bounds write (CWE-787) in FactoryTalk Historian Machine Edition that allows an attacker with low-level authentication to achieve remote code execution. The flaw resides in memory management within the affected embedded historian module. An authenticated attacker can write data beyond allocated buffer boundaries, overwriting adjacent memory and executing arbitrary code with the privileges of the historian process. The vulnerability affects Series B and C variants of the 1756-HIST2G module; patches are available in Series B v5.203 and Series C v7.102.

## Affected products

- Rockwell Automation FactoryTalk Historian Machine Edition Series B 5.202, Series C 7.101

## Timeline

- 2026-09-01: disclosed: Security advisory SD1796 published

## References

- [https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1796.html](https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1796.html)

## Related threats

- [Rockwell Automation FactoryTalk Historian Machine Edition stack-based buffer overflow](https://junglewise.ai/threats/cve-2026-12661-rockwell-automation-factorytalk-historian-machine-edition-stack)