Rockwell Automation FactoryTalk Historian Machine Edition Web Interface buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00+

Summaryinfo

A vulnerability described as critical has been identified in Rockwell Automation FactoryTalk Historian Machine Edition. This issue affects some unknown processing of the component Web Interface. Executing a manipulation can lead to buffer overflow. The identification of this vulnerability is CVE-2026-12661. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Rockwell Automation FactoryTalk Historian Machine Edition (unknown version). It has been declared as critical. This vulnerability affects an unknown code block of the component Web Interface. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect availability. CVE summarizes:

A denial-of-service security issue exists within FactoryTalk® Historian Machine Edition.  A network adjacent attacker who is authenticated could send crafted requests to the web interface, resulting in buffer overflow conditions that may cause the device to crash and become unresponsive.

The advisory is available at rockwellautomation.com. This vulnerability was named CVE-2026-12661 since 06/18/2026. The exploitation appears to be easy. The attack can be initiated remotely. The technical details are unknown and an exploit is not available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

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Vendor

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/18/2026 CVE reserved
09/01/2026 +75 days Advisory disclosed
09/01/2026 +0 days VulDB entry created
09/01/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: rockwellautomation.com
Status: Confirmed

CVE: CVE-2026-12661 (🔒)
GCVE (CVE): GCVE-0-2026-12661
GCVE (VulDB): GCVE-100-397654

Entryinfo

Created: 09/01/2026 15:57
Changes: 09/01/2026 15:57 (64)
Complete: 🔍
Cache ID: 216::103

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