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Fencer Intel
critical 9.6

CVE-2025-40943 json

Affected devices do not properly sanitize contents of trace files.

published 7mo ago modified 4mo ago also EUVD-2025-208482

cvss
9.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 46%
public exploits
0
none known

Summary

Affected devices do not properly sanitize contents of trace files.

This could allow an attacker to inject code through social engineering an authorized user, who has the function right "Read diagnostics", to import a specially crafted trace file.

The malicious trace file is insufficiently sanitized and malicious code could be executed in the clients browser session and trigger PLC operations via the webserver that the legitimate user is authorized to perform.

Patch / fix

  • Siemens SIMATIC Drive Controller CPU 1504D TF V3.1.6
  • Siemens SIMATIC Drive Controller CPU 1507D TF V3.1.6
  • Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC ET 200SP CPU 1510SP-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC ET 200SP CPU 1512SP-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC ET 200SP CPU 1514SP F-2 PN V4.1.2
  • Siemens SIMATIC ET 200SP CPU 1514SP-2 PN V4.1.2
  • Siemens SIMATIC ET 200SP CPU 1514SPT F-2 PN V4.1.2
  • Siemens SIMATIC ET 200SP CPU 1514SPT-2 PN V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1511-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1511C-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1511F-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1511T-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1511TF-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1512C-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1513-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1513F-1 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1513pro F-2 PN V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1513pro-2 PN V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1515-2 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1515F-2 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1515T-2 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1515TF-2 PN V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1516-3 PN/DP V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1516F-3 PN/DP V2.9.9, V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1516pro F-2 PN V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1516pro-2 PN V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1516T-3 PN V4.1.2
  • Siemens SIMATIC S7-1500 CPU 1516T-3 PN/DP V3.1.6

Is CVE-2025-40943 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-26-071-04 updated cvss 9.6

Siemens SIMATIC

  • Siemens SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0) < 3.1.6 Siemens SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0) < 3.1.6
    affected: fixed in V3.1.6, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SJ01-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0) < 4.1.2
    affected: fixed in V4.1.2, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200SP CPU 1510SP-1 PN (6ES7510-1DJ01-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200SP CPU 1510SP-1 PN (6ES7510-1DK03-0AB0) < 4.1.2
    affected: fixed in V4.1.2, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN (6ES7512-1SK01-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN (6ES7512-1SM03-0AB0) < 4.1.2
    affected: fixed in V4.1.2, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200SP CPU 1512SP-1 PN (6ES7512-1DK01-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com
show 17 more
  • Siemens SIMATIC ET 200SP CPU 1512SP-1 PN (6ES7512-1DM03-0AB0) < 4.1.2 Siemens SIMATIC ET 200SP CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0) < 4.1.2 Siemens SIMATIC ET 200SP CPU 1514SP-2 PN (6ES7514-2DN03-0AB0) < 4.1.2 Siemens SIMATIC ET 200SP CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0) < 4.1.2 Siemens SIMATIC ET 200SP CPU 1514SPT-2 PN (6ES7514-2VN03-0AB0) < 4.1.2
    affected: fixed in V4.1.2, mitigation support.industry.siemens.com
  • Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V2 CPUs - Windows OS Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs - Industrial OS Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs - Windows OS Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC3 V4 CPUs Siemens SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK00-0AB0)
    affected: mitigation, no fix available
  • Siemens SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK01-0AB0) < 2.9.9 Siemens SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK02-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AL03-0AB0) < 4.1.2
    affected: fixed in V4.1.2, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK00-0AB0) < 2.9.9 Siemens SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK01-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CL03-0AB0) < 4.1.2
    affected: fixed in V4.1.2, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK01-0AB0) < 2.9.9 Siemens SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK02-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FL03-0AB0) < 4.1.2
    affected: fixed in V4.1.2, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TK01-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TL03-0AB0) < 4.1.2
    affected: fixed in V4.1.2, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UK01-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UL03-0AB0) < 4.1.2
    affected: fixed in V4.1.2, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK00-0AB0) < 2.9.9 Siemens SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK01-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CM03-0AB0) < 4.1.2
    affected: fixed in V4.1.2, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL01-0AB0) < 2.9.9 Siemens SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL02-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AM03-0AB0) < 4.1.2
    affected: fixed in V4.1.2, mitigation support.industry.siemens.com
  • Siemens SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL01-0AB0) < 2.9.9
    affected: fixed in V2.9.9, mitigation support.industry.siemens.com

117 more affected in the full advisory

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
7mo ago

Exploit prediction

0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CNA 4.0 9.4 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CNA 4.0 9.4 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • Siemens SIMATIC Drive Controller CPU 1504D TF
  • Siemens SIMATIC Drive Controller CPU 1507D TF
  • Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN
  • Siemens SIMATIC ET 200SP CPU 1510SP-1 PN
  • Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN
  • Siemens SIMATIC ET 200SP CPU 1512SP-1 PN
  • Siemens SIMATIC ET 200SP CPU 1514SP F-2 PN
  • Siemens SIMATIC ET 200SP CPU 1514SP-2 PN
  • Siemens SIMATIC ET 200SP CPU 1514SPT F-2 PN
  • Siemens SIMATIC ET 200SP CPU 1514SPT-2 PN
  • Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants)
  • Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V2 CPUs - Windows OS
  • Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs - Industrial OS
  • Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) V3 CPUs - Windows OS
  • Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC3 V4 CPUs
  • Siemens SIMATIC S7-1500 CPU 1511-1 PN
  • Siemens SIMATIC S7-1500 CPU 1511C-1 PN
  • Siemens SIMATIC S7-1500 CPU 1511F-1 PN
  • Siemens SIMATIC S7-1500 CPU 1511T-1 PN
  • Siemens SIMATIC S7-1500 CPU 1511TF-1 PN
  • Siemens SIMATIC S7-1500 CPU 1512C-1 PN
  • Siemens SIMATIC S7-1500 CPU 1513-1 PN
  • Siemens SIMATIC S7-1500 CPU 1513F-1 PN
  • Siemens SIMATIC S7-1500 CPU 1513pro F-2 PN
  • Siemens SIMATIC S7-1500 CPU 1513pro-2 PN
  • Siemens SIMATIC S7-1500 CPU 1515-2 PN
  • Siemens SIMATIC S7-1500 CPU 1515F-2 PN
  • Siemens SIMATIC S7-1500 CPU 1515T-2 PN
  • Siemens SIMATIC S7-1500 CPU 1515TF-2 PN
  • Siemens SIMATIC S7-1500 CPU 1516-3 PN/DP
  • Siemens SIMATIC S7-1500 CPU 1516F-3 PN/DP
  • Siemens SIMATIC S7-1500 CPU 1516pro F-2 PN
  • Siemens SIMATIC S7-1500 CPU 1516pro-2 PN
  • Siemens SIMATIC S7-1500 CPU 1516T-3 PN
  • Siemens SIMATIC S7-1500 CPU 1516T-3 PN/DP
  • Siemens SIMATIC S7-1500 CPU 1516TF-3 PN
  • Siemens SIMATIC S7-1500 CPU 1516TF-3 PN/DP
  • Siemens SIMATIC S7-1500 CPU 1517-3 PN
  • Siemens SIMATIC S7-1500 CPU 1517-3 PN/DP
  • Siemens SIMATIC S7-1500 CPU 1517F-3 PN
  • Siemens SIMATIC S7-1500 CPU 1517F-3 PN/DP
  • Siemens SIMATIC S7-1500 CPU 1517T-3 PN
  • Siemens SIMATIC S7-1500 CPU 1517T-3 PN/DP
  • Siemens SIMATIC S7-1500 CPU 1517TF-3 PN
  • Siemens SIMATIC S7-1500 CPU 1517TF-3 PN/DP
  • Siemens SIMATIC S7-1500 CPU 1518-3 PN
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-3 PN
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP

Classification

Weakness
  • CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.