CVE-2021-40358
Siemens · published 2021-11-09
Source record Collected from the National Vulnerability Database (NVD)
Description
Description by Siemens AG via the CVE Program.
A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3 UC04), 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 V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 5). Legitimate file operations on the web server of the affected systems do not properly neutralize special elements within the pathname. An attacker could then cause the pathname to resolve to a location outside of the restricted directory on the server and read, write or delete unexpected critical files.
Status at the source
- NVD status: Modified
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Siemens | SIMATIC PCS 7 V8.2 | All versions: affected |
| Siemens | SIMATIC PCS 7 V9.0 | All versions < V9.0 SP3 UC04: affected |
| Siemens | SIMATIC PCS 7 V9.1 | All versions < V9.1 SP1: affected |
| Siemens | SIMATIC WinCC V15 and earlier | All versions < V15 SP1 Update 7: affected |
| Siemens | SIMATIC WinCC V16 | All versions < V16 Update 5: affected |
| Siemens | SIMATIC WinCC V17 | All versions < V17 Update 2: affected |
| Siemens | SIMATIC WinCC V7.4 | All versions < V7.4 SP1 Update 19: affected |
| Siemens | SIMATIC WinCC V7.5 | All versions < V7.5 SP2 Update 5: affected |
Products named in NVD's CPE match criteria (2)
cpe:2.3:a:siemens:simatic_pcs_7:8.2:*:*:*:*:*:*:*cpe:2.3:a:siemens:simatic_wincc:7.4:*:*:*:*:*:*:*
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 3.1: 9.9 CRITICAL — as published by Siemens AG (Secondary)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - CVSS 3.1: 9.8 CRITICAL — as published by NIST (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0: 7.5 HIGH — as published by NIST (Primary)
AV:N/AC:L/Au:N/C:P/I:P/A:P
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
- https://cert-portal.siemens.com/productcert/pdf/ssa-840188.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-840188.pdf
Source dates: published 2021-11-09, last changed 2026-06-17. DeSpy's copy of this version is dated 2026-09-28.
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