CVE-2022-4333Network attack vector

Device takeover via static maintenance credentials

Published Jun 1, 2023 · Updated Jan 10, 2025

Hard-coded credentials in Sprecher Automation SPRECON-E CPU modules allow remote attackers to take control through enabled maintenance logins. The devices accept two fixed vendor accounts, sprecon and spradm, whose password hashes are shipped in firmware and cannot be changed or deleted. Exploitation requires maintenance access to be enabled; the accounts have limited privileges, and firmware 8.71g adds two-factor authentication.

CVSS severity9.8
Critical
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded credentials in Sprecher Automation SPRECON-E CPU modules allow remote attackers to take control through enabled maintenance logins. The devices accept two fixed vendor accounts, sprecon and spradm, whose password hashes are shipped in firmware and cannot be changed or deleted. Exploitation requires maintenance access to be enabled; the accounts have limited privileges, and firmware 8.71g adds two-factor authentication.

The record

CVE
CVE-2022-4333
Published
Jun 1, 2023
Updated
Jan 10, 2025
Vendor
Sprecher Automation
Product
SPRECON-E CPU MC33/34
Classifications
CWE-798, CAPEC-21, T0859
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 1, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 10, 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=all

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sprecher Automation · SPRECON-E CPU MC33/34version=all
Sprecher Automation · SPRECON-E CPU PU244xversion=all
Sprecher Automation · SPRECON-E CPU PU243xversion=all
Sprecher Automation · SPRECON-EDIRversion=all

Published CVSS scores

9.8CERT VDECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
CAPEC-21Exploitation of Trusted Credentials
T0859Valid Accounts

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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