Horner Automation’s RCC 972 firmware version 15.40 contains global variables.

published 2022-12-02 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-34889

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits: 0; none known

Horner Automation’s RCC 972 firmware version 15.40 contains global variables. This could allow an attacker to read out sensitive values and variable keys from the device.

Patch / fix

links 1

cisa.gov/uscert/ics/advisories/icsa-22-335-02 advisory

Vendor advisories

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

cisa ICSA-22-335-02 updated 2022-12-01 cvss 7.5

Horner Automation Remote Compact Controller

Horner Automation RCC 972 15.4
affected: mitigation “RCC 972: Update to Firmware Version 15.60 or later” hornerautomation.com

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: 18 mo ago (2025-04-16)

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% 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:H/I:N/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Horner Automation Remote Compact Controller (RCC) 972

Classification

Weakness

CWE-1108 Excessive Reliance on Global Variables

References

cisa.gov /uscert/ics/advisories/icsa-22-335-02
patch, third-party-advisory, us-government-resource

Sources

CVE List CVE-2022-2642
NVD CVE-2022-2642

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