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CVE-2021-31894

A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.X (All versions < V9.1 SP2), SIMATIC PDM (All versions < V9.2 SP2), SIMATIC STEP 7 V5.X (All v...

Published: Jul 13, 2021Updated: Nov 21, 2024 Sources: CVE List NVD csafCWE-732
NVD MITRE
8.8CVSSHIGH
EPSS Score
0.2%
Top 86.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Multiple SIMATIC software products are affected by a vulnerability that could allow an attacker to change the content of certain metafiles and subsequently manipulate parameters or behaviour of devices configured by the affected software products. Siemens has released updates for several affected products and recommends to update to the latest versions. Siemens is preparing further updates and recommends specific countermeasures for products where updates are not, or not yet available.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:CC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-732

Affected Products

SIMATIC PCS 7 V8.2 and earlierSiemensICS / OT / IoT
SIMATIC PCS 7 V9.XSiemensICS / OT / IoT
SIMATIC PDMSiemensICS / OT / IoT
SIMATIC STEP 7 V5.XSiemensICS / OT / IoT
SINAMICS STARTER (containing STEP 7 OEM version)SiemensICS / OT / IoT
siemenscommercialDEEnterprise Softwareaka siemens ag
and 4 more affected products View all →

Exploitability

Official Patch Available
No detection template yetWe can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://cert-portal.siemens.com/productcert/csaf/ssa-661034.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/txt/ssa-661034.txt
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/pdf/ssa-661034.pdf
cert-portal.siemens.com
and 8 more references View all →

Timeline

Published
Jul 13, 2021
Last Updated
Nov 21, 2024

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