CVE-2021-43575Public exploit

Project information disclosure via fixed encryption secrets

Published Nov 9, 2021 · Updated Aug 4, 2024

Hard-coded credentials in KNX ETS6 through 6.0.0 allow local users to read project information from the local project store. Project XML attributes use AES-256-CBC with a key and IV derived from the fixed ETS5Password password and Ivan Medvedev salt instead of the project password. Access requires local read access to the project store; the vendor disputes that securely storing unexported key material is ETS's responsibility.

CVSS severity5.5
Medium
EPSS probability0.32%
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 KNX ETS6 through 6.0.0 allow local users to read project information from the local project store. Project XML attributes use AES-256-CBC with a key and IV derived from the fixed ETS5Password password and Ivan Medvedev salt instead of the project password. Access requires local read access to the project store; the vendor disputes that securely storing unexported key material is ETS's responsibility.

The record

CVE
CVE-2021-43575
Published
Nov 9, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-798, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record 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 vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.1NIST NVDAV:L/AC:L/Au:N/C:P/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1552.001Credentials In Files

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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