CVE-2022-2640

Name: CVE-2022-2640
Creator: NVD / NIST
Published: 2022-12-02T20:15:12.55+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.25%

Last modified Jun 17, 2026

CVE-2022-2640 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The Config-files of Horner Automation’s RCC 972 with firmware version 15.40 are encrypted with weak XOR encryption vulnerable to reverse engineering. This could allow an attacker to obtain credentials to run services such as File Transfer Protocol (FTP) and Hypertext Transfer Protocol (HTTP).. EPSS estimates a 0.25% chance of exploitation in the next 30 days.

Description

The Config-files of Horner Automation’s RCC 972 with firmware version 15.40 are encrypted with weak XOR encryption vulnerable to reverse engineering. This could allow an attacker to obtain credentials to run services such as File Transfer Protocol (FTP) and Hypertext Transfer Protocol (HTTP).

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.25%

15.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-326

Affected Software

Vendor	Product	Versions
Hornerautomation	Rcc972 Firmware	15.40

References

https://www.cisa.gov/uscert/ics/advisories/icsa-22-335-02Patch, Third Party Advisory, US Government Resource
https://www.cisa.gov/uscert/ics/advisories/icsa-22-335-02Patch, Third Party Advisory, US Government Resource

Timeline

Published: Dec 2, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-2640?

How severe is CVE-2022-2640?

CVE-2022-2640 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.

How do I fix CVE-2022-2640?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-2640?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST