Siemens SIMATIC WinCC is widely deployed OT/ICS HMI/SCADA; RCE in WinCC can disrupt industrial processes across sectors.
CVE-2026-59082
WinCC file handling flaw allows arbitrary code execution when opening crafted files.
Is CVE-2026-59082 being exploited?
Not confirmed. CVE-2026-59082 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-59082?
CVE-2026-59082 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-59082?
Not known from our data. No patch reference has been recorded for CVE-2026-59082, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-59082 affect?
CVE-2026-59082 affects Siemens SIMATIC WinCC V7.5 (all versions), Siemens SIMATIC WinCC V8.0 (all versions), Siemens SIMATIC WinCC V8.1 (all versions). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-59082?
Isolate engineering stations, block untrusted files, apply vendor advisory mitigations and patch when available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote/ local arbitrary code execution via crafted project/file; attacker can execute code, compromise host, pivot, or disrupt control systems.
Immediate action required
- affected< *
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As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
timeline
- 10 Nov 2026Published
- 10 Nov 2026CVE record last updated · same day later
- 10 Nov 2026Analysed by vulneraibility.com · same day later
- Linkcert-portal.siemens.com /productcert/html/ssa-979641.html
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- FIRST EPSS: exploit probability and percentile
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.