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Fencer Intel
medium 6.1

CVE-2026-63357 json

Affected devices do not properly sanitize calculated signal data contained in imported calculated signal files before rendering it on the T…

published 29d ago modified 27d ago also EUVD-2026-98388

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 8%
public exploits
0
none known

Summary

Affected devices do not properly sanitize calculated signal data contained in imported calculated signal files before rendering it on the Trace page.

This could allow an attacker to social engineer an authorized user who holds the function right “Read diagnostics” into importing a specially crafted file. Successful exploitation could allow attacker-controlled JavaScript to execute in the user’s browser session and perform PLC operations through the web server within the scope of the user’s authorization.

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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-26-295-14 updated cvss 6.1

Siemens SIMATIC S7 PLCs Web Server

  • Siemens SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0) Siemens SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0) Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SJ01-0AB0) Siemens SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0) Siemens SIMATIC ET 200SP CPU 1510SP-1 PN (6ES7510-1DJ01-0AB0) Siemens SIMATIC ET 200SP CPU 1510SP-1 PN (6ES7510-1DK03-0AB0)
    +34 more products
    Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN (6ES7512-1SK01-0AB0) Siemens SIMATIC ET 200SP CPU 1512SP F-1 PN (6ES7512-1SM03-0AB0) Siemens SIMATIC ET 200SP CPU 1512SP-1 PN (6ES7512-1DK01-0AB0) Siemens SIMATIC ET 200SP CPU 1512SP-1 PN (6ES7512-1DM03-0AB0) Siemens SIMATIC ET 200SP CPU 1514SP F-2 PN (6ES7514-2SN03-0AB0) Siemens SIMATIC ET 200SP CPU 1514SP-2 PN (6ES7514-2DN03-0AB0) Siemens SIMATIC ET 200SP CPU 1514SPT F-2 PN (6ES7514-2WN03-0AB0) Siemens SIMATIC ET 200SP CPU 1514SPT-2 PN (6ES7514-2VN03-0AB0) 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) Siemens SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK01-0AB0) Siemens SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AK02-0AB0) Siemens SIMATIC S7-1500 CPU 1511-1 PN (6ES7511-1AL03-0AB0) Siemens SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK00-0AB0) Siemens SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CK01-0AB0) Siemens SIMATIC S7-1500 CPU 1511C-1 PN (6ES7511-1CL03-0AB0) Siemens SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK01-0AB0) Siemens SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FK02-0AB0) Siemens SIMATIC S7-1500 CPU 1511F-1 PN (6ES7511-1FL03-0AB0) Siemens SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TK01-0AB0) Siemens SIMATIC S7-1500 CPU 1511T-1 PN (6ES7511-1TL03-0AB0) Siemens SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UK01-0AB0) Siemens SIMATIC S7-1500 CPU 1511TF-1 PN (6ES7511-1UL03-0AB0) Siemens SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK00-0AB0) Siemens SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CK01-0AB0) Siemens SIMATIC S7-1500 CPU 1512C-1 PN (6ES7512-1CM03-0AB0) Siemens SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL01-0AB0) Siemens SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AL02-0AB0) Siemens SIMATIC S7-1500 CPU 1513-1 PN (6ES7513-1AM03-0AB0) Siemens SIMATIC S7-1500 CPU 1513F-1 PN (6ES7513-1FL01-0AB0)
    affected: mitigation, no fix available

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
partial
Assessed
28d ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 8% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CNA 4.0 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
CNA 4.0 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/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-79 Improper Neutralization of Input During Web Page Generation

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.