November 14, 2026

CVE Watchtower

CVE-2026-59082Siemens SIMATIC WinCC V7.5 < *

NVD

Vulnerability Summary

A vulnerability has been identified in SIMATIC WinCC V7.5 (All versions), SIMATIC WinCC V8.0 (All versions), SIMATIC WinCC V8.1 (All versions). Affected devices implicitly execute active content when opening files. This could allow an attacker to make the user execute arbitrary code on the device.
Severity Level
HIGH(8.5)
Published Date
Nov 10, 2026
Last Modified
Nov 13, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.13%Probability
Root Weakness (CWE)
CWE-357 ↗
See the MITRE CWE entry for the full definition of this weakness.
CVSS v4.0 Base Metrics — Score 8.5 (HIGH)
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Attack VectorLocal
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredNone
User InteractionPassive
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)None
Integrity (Subsequent System)None
Availability (Subsequent System)None
Show CVSS v3.x metrics (score 7.8)
CVSS v3.1 Base Metrics — Score 7.8 (HIGH)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Siemens SIMATIC WinCC V7.5 < *
  • Siemens SIMATIC WinCC V8.0 < *
  • Siemens SIMATIC WinCC V8.1 < *
Patched Versions
  • Siemens SIMATIC WinCC V7.5 *
  • Siemens SIMATIC WinCC V8.0 *
  • Siemens SIMATIC WinCC V8.1 *

What to do

Plan remediation soon. No exploitation is confirmed yet, but the severity is high.

  1. Check whether you run Siemens SIMATIC WinCC V7.5 < * and which version.
  2. Update to a patched version listed above, then confirm the new version.

Timeline

  • Nov 10, 2026Published
  • Nov 13, 2026Record last modified

Score, severity and exploitation changes are tracked from the day Watchtower started logging them.

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External References

Data last checked: Nov 14, 2026 01:09 UTC