High severity · published Oct 13, 2026
CVE-2026-59241
A vulnerability has been identified in SIMATIC WinCC V7.5 (All versions), SIMATIC WinCC V8.0 (All versions < V8.0 Update 11), SIMATIC WinCC V8.1 (All versions < V8.1 Update 7)
8.8
CVSS
0.3%
EPSS
No
On KEV
Description
A vulnerability has been identified in SIMATIC WinCC V7.5 (All versions), SIMATIC WinCC V8.0 (All versions < V8.0 Update 11), SIMATIC WinCC V8.1 (All versions < V8.1 Update 7). The affected application does not sufficiently restrict the permissions assigned to a database role. This could allow an authenticated remote attacker with database access to escalate privileges and execute arbitrary commands on the host system where SIMATIC WinCC is installed, potentially leading to a compromise of the system.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SW
SW
SIMATIC WinCC V8.0 · Siemens
before V8.0 Update 11 · source: vendor
SW
SIMATIC WinCC V8.1 · Siemens
before V8.1 Update 7 · source: vendor
In the news
VulnerabilityHigh
Siemens WinCC
View CSAF Summary Multiple SIMATIC WinCC versions are affected by a database privilege escalation vulnerability that could allow an authenticated user with access to the database to execute commands on the underlying host system. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fixes and recommends mitigations for products where fixes are not or not yet available. The following versions of Siemens WinCC are affected: SIMATIC WinCC V7.5 vers:all/* (CVE-2026-59241) SIMATIC WinCC V8.0 vers:intdot/&lt;8.0.0.11 (CVE-2026-59241) SIMATIC WinCC V8.1 vers:intdot/&lt;8.1.7 (CVE-2026-59241) CVSS Vendor Equipment v3 8.8 Siemens SIMATIC WinCC V7.5 1 Vulnerability Incorrect Privilege Assignment Background Critical Infrastructure Sectors: Critical Manufacturing, Transportation Systems, Energy, Healthcare and Public Health, Financial Services, Government Services and Facilities Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities CVE-2026-59241 The affected application does not sufficiently restrict the permissions assigned to a database role. This could allow an authenticated remote attacker with database access to escalate privileges and execute arbitrary commands on the host system where SIMATIC WinCC is installed, potentially leading to a compromise of ...
Oct 22, 2026·CISA Advisories
Affected product
SW
SIMATIC WinCC V7.5
Siemens
More from SIMATIC WinCC V7.5
9.1
CVE-2024-35783
A vulnerability has been identified in SIMATIC BATCH V9.1 (All versions), SIMATIC Information Server 2020 (All versions < V2020 SP2 Update 5), SIMATIC Information Server 2022 (All…