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CVE-2026-63351

MEDIUMCVSS 6.1/10EPSS 0.24%

Last modified

CVE-2026-63351 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Affected devices do not properly validate and sanitize visual properties of calculated signals contained in imported CSV trace files before rendering them 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 trace 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.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.

Description

Affected devices do not properly validate and sanitize visual properties of calculated signals contained in imported CSV trace files before rendering them 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 trace 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.

Metrics

CVSS 3.1
6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS 4.0
5.3/10

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

EPSS Probability
0.24%

13.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

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

Showing 50 of 103 affected configurations. See the CNA advisory for the full list.

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-63351?
Affected devices do not properly validate and sanitize visual properties of calculated signals contained in imported CSV trace files before rendering them 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 trace 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.
How severe is CVE-2026-63351?
CVE-2026-63351 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2026-63351?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST