CVE-2022-2640Network attack vector

Credential disclosure via reversible XOR configuration encryption

Published Dec 12, 2022 · Updated Apr 16, 2025

Inadequate encryption strength in Horner Automation RCC972 firmware 15.40 allows remote attackers to recover service credentials. Configuration files protect embedded FTP and HTTP credentials with reversible XOR encryption rather than a cryptographically strong scheme. Network reachability and no authentication are required, and the reported consequence is credential disclosure only.

CVSS severity7.5
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Inadequate encryption strength in Horner Automation RCC972 firmware 15.40 allows remote attackers to recover service credentials. Configuration files protect embedded FTP and HTTP credentials with reversible XOR encryption rather than a cryptographically strong scheme. Network reachability and no authentication are required, and the reported consequence is credential disclosure only.

The record

CVE
CVE-2022-2640
Published
Dec 12, 2022
Updated
Apr 16, 2025
Vendor
Horner Automation
Product
RCC972
Classifications
CWE-326, T1140, T1552.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 12, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Firmware Version 15.40

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Horner Automation · RCC972version=Firmware Version 15.40

Published CVSS scores

7.5ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-326Inadequate Encryption Strength
T1140Deobfuscate/Decode Files or Information
T1552.001Credentials In Files

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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