CVE-2021-22778

Unauthorized project block access via weak credential protection

Published Jul 14, 2021 · Updated Aug 3, 2024

Insufficiently Protected Credentials in Schneider Electric EcoStruxure Control Expert before V15.0 SP1 allows attackers to read or modify protected blocks via project files. The project-file handling exposes protected derived function blocks without adequate credential protection, permitting unauthorized reads or writes when a project file is accessed. Exploitation requires local access to the project file; consequences are bounded to confidentiality and integrity of those protected blocks, with no availability impact reported.

CVSS severity7.1
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficiently Protected Credentials in Schneider Electric EcoStruxure Control Expert before V15.0 SP1 allows attackers to read or modify protected blocks via project files. The project-file handling exposes protected derived function blocks without adequate credential protection, permitting unauthorized reads or writes when a project file is accessed. Exploitation requires local access to the project file; consequences are bounded to confidentiality and integrity of those protected blocks, with no availability impact reported.

The record

CVE
CVE-2021-22778
Published
Jul 14, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-522
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.1NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
3.6NVDAV:L/AC:L/Au:N/C:P/I:P/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-522Insufficiently Protected Credentials

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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