SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2023-2637

Rockwell Automation's FactoryTalk System Services uses a hard-coded cryptographic key to generate administrator cookies.

HIGH 8.2EPSS 0.20%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Rockwell Automation's FactoryTalk System Services uses a hard-coded cryptographic key to generate administrator cookies.  Hard-coded cryptographic key may lead to privilege escalation.  This vulnerability may allow a local, authenticated non-admin user to generate an invalid administrator cookie giving them administrative privileges to the FactoryTalk Policy Manger database. This may allow the threat actor to make malicious changes to the database that will be deployed when a legitimate FactoryTalk Policy Manager user deploys a security policy model. User interaction is required for this vulnerability to be successfully exploited.

CVSS 3.1
8.2 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
EPSS
0.20% probability · 9th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-321, CWE-798
Affected
rockwellautomation/factorytalk policy manager · rockwellautomation/factorytalk system services
Source
PSIRT@rockwellautomation.com
EPSS trend
0%3%5%8 October 2026: 0.20%8 October 20268 October 2026

EPSS 0.2% since 8 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.