CVE-2020-18329Public exploitNetwork attack vector

Unauthenticated management access via exposed web interface

Published Jan 25, 2023 · Updated Apr 2, 2025

Authentication bypass in Rehau devices using Carel pCOWeb web 2.2 allows remote attackers to access configuration and services. The embedded web server exposes /http/default.html on its management ports without an authentication option or access check. Network reachability to a pCOWeb service port is the only reported gate; the evidence establishes exposed management access, not service interruption.

CVSS severity7.5
High
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Rehau devices using Carel pCOWeb web 2.2 allows remote attackers to access configuration and services. The embedded web server exposes /http/default.html on its management ports without an authentication option or access check. Network reachability to a pCOWeb service port is the only reported gate; the evidence establishes exposed management access, not service interruption.

The record

CVE
CVE-2020-18329
Published
Jan 25, 2023
Updated
Apr 2, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-281, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 25, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5CISA-ADPCVSS: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.

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

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 exploitPublished

Weakness, pattern, technique

CWE-281Improper Preservation of Permissions
T1190Exploit Public-Facing Application

Public exploit references

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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