CVE-2021-40363 - CVE House
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Status published High CVE-2021-40363

A vulnerability has been identified in SIMATIC PCS 7 V8.2...

Vulnerability Description

A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1), SIMATIC WinCC V15 and earlier (All versions < V15 SP1 Update 7), SIMATIC WinCC V16 (All versions < V16 Update 5), SIMATIC WinCC V17 (All versions < V17 Update 2), SIMATIC WinCC V17 (All versions <= V17 Update 4), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 6). The affected component stores the credentials of a local system account in a potentially publicly accessible project file using an outdated cipher algorithm. An attacker may use this to brute force the credentials and take over the system.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

Affected Software

SIMATIC PCS 7 V8.2, SIMATIC PCS 7 V9.0, SIMATIC PCS 7 V9.1, SIMATIC WinCC V15 and earlier, SIMATIC WinCC V16, SIMATIC WinCC V17, SIMATIC WinCC V7.4, SIMATIC WinCC V7.5
Vulnerable Versions:
All versions, All versions < V9.1 SP1, All versions < V15 SP1 Update 7, All versions < V16 Update 5, All versions < V17 Update 2, All versions <= V17 Update 4, All versions < V7.4 SP1 Update 19, All versions < V7.5 SP2 Update 6

Timeline

Official Publish: February 9th, 2022
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-538

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.