Is there a public exploit for CVE-2025-40759?

No public exploit for CVE-2025-40759 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2025-40759?

CVE-2025-40759 scores CVSS 8.5 (v4.0), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.2%.

What does CVE-2025-40759 affect?

CVE-2025-40759 affects Siemens SIMOTION SCOUT TIA V5.5, SIRIUS Soft Starter ES V20 (TIA Portal), SIMATIC WinCC V17, SIMOCODE ES V18, TIA Portal Cloud V17, SIMOCODE ES V19.

8.5 High

A vulnerability has been identified in SIMATIC S7-PLCSIM V17 (All versions), SIMATIC STEP 7 V17 (All versions < V17 Update 9), SIMATIC STEP…

CVE-2025-40759

A vulnerability has been identified in SIMATIC S7-PLCSIM V17 (All versions), SIMATIC STEP 7 V17 (All versions < V17 Update 9), SIMATIC STEP 7 V18 (All versions < V18 Update 6), SIMATIC STEP 7 V19 (All versions < V19 Update 4), SIMATIC STEP 7 V20 (All versions < V20 Update 4), SIMATIC WinCC V17 (All versions < V17 Update 9), SIMATIC WinCC V18 (All versions < V18 Update 6), SIMATIC WinCC V19 (All versions < V19 Update 4), SIMATIC WinCC V20 (All versions < V20 Update 4), SIMOCODE ES V17 (All versions), SIMOCODE ES V18 (All versions), SIMOCODE ES V19 (All versions), SIMOCODE ES V20 (All versions), SIMOTION SCOUT TIA V5.4 (All versions), SIMOTION SCOUT TIA V5.5 (All versions), SIMOTION SCOUT TIA V5.6 (All versions < V5.6 SP1 HF7), SIMOTION SCOUT TIA V5.7 (All versions), SINAMICS Startdrive V17 (All versions), SINAMICS Startdrive V18 (All versions), SINAMICS Startdrive V19 (All versions), SINAMICS Startdrive V20 (All versions), SIRIUS Safety ES V17 (TIA Portal) (All versions), SIRIUS Safety ES V18 (TIA Portal) (All versions), SIRIUS Safety ES V19 (TIA Portal) (All versions), SIRIUS Safety ES V20 (TIA Portal) (All versions), SIRIUS Soft Starter ES V17 (TIA Portal) (All versions), SIRIUS…

Assessment

CVSS: 8.5 (v4.0)
Severity: High
EPSS: 0.2% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 12 August 2025
Last updated: 10 November 2026
Affected: Siemens · SIMATIC S7-PLCSIM V17 · SIMATIC STEP 7 V17 · SIMATIC STEP 7 V18 · SIMATIC STEP 7 V19
Assigner: siemens

CVSS vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

https://cert-portal.siemens.com/productcert/html/ssa-493396.html

Community proofs of concept

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