Medium severity · published Oct 13, 2026
CVE-2026-63357
Affected devices do not properly sanitize calculated signal data contained in imported calculated signal files before rendering it on the Trace page
6.1
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SD
SIMATIC Drive Controller CPU 1504D TF · Siemens
0 · source: vendor
SD
SIMATIC Drive Controller CPU 1507D TF · Siemens
0 · source: vendor
SE
SIMATIC ET 200SP CPU 1510SP F-1 PN · Siemens
0; 0 · source: vendor
SE
SIMATIC ET 200SP CPU 1510SP-1 PN · Siemens
0; 0 · source: vendor
SE
SIMATIC ET 200SP CPU 1512SP F-1 PN · Siemens
0; 0 · source: vendor
SE
SIMATIC ET 200SP CPU 1512SP-1 PN · Siemens
0; 0 · source: vendor
SE
SIMATIC ET 200SP CPU 1514SP F-2 PN · Siemens
0 · source: vendor
SE
SIMATIC ET 200SP CPU 1514SP-2 PN · Siemens
0 · source: vendor
SE
SIMATIC ET 200SP CPU 1514SPT F-2 PN · Siemens
0 · source: vendor
SE
SIMATIC ET 200SP CPU 1514SPT-2 PN · Siemens
0 · source: vendor
SE
In the news
VulnerabilityHigh
Siemens SIMATIC S7 PLCs Web Server
View CSAF
Summary
SIMATIC S7-1500 devices contain multiple vulnerabilities in the web server that could allow an attacker to execute malicious code in an authorized user’s browser session and perform PLC operations within the scope of that user’s authorization. Siemens is preparing fixes and recommends specific mitigations for products where fixes are not or not yet available.
The following versions of Siemens SIMATIC S7 PLCs Web Server are affected:
SIMATIC Drive Controller CPU 1504D TF (6ES7615-4DF10-0AB0) vers:all/* (CVE-2026-63350, CVE-2026-63351, CVE-2026-63352, CVE-2026-63353, CVE-2026-63354, CVE-2026-63355, CVE-2026-63356, CVE-2026-63357)
SIMATIC Drive Controller CPU 1507D TF (6ES7615-7DF10-0AB0) vers:all/* (CVE-2026-63350, CVE-2026-63351, CVE-2026-63352, CVE-2026-63353, CVE-2026-63354, CVE-2026-63355, CVE-2026-63356, CVE-2026-63357)
SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SJ01-0AB0) vers:all/* (CVE-2026-63350, CVE-2026-63351, CVE-2026-63352, CVE-2026-63353, CVE-2026-63354, CVE-2026-63355, CVE-2026-63356, CVE-2026-63357)
SIMATIC ET 200SP CPU 1510SP F-1 PN (6ES7510-1SK03-0AB0) vers:all/* (CVE-2026-63350, CVE-2026-63351, CVE-2026-63352, CVE-2026-63353, CVE-2026-63354, CVE-2026-63355, CVE-2026-63356, CVE-2026-63357)
SIMATIC ET 200SP CPU 1510SP-1 PN (6ES7510-1DJ01-0AB0) vers:all/* (CVE-2026-63350, CVE-2026-63351, CVE-2026-63352, CVE-2026-63353, CVE-2026-63354, CVE-2026-63355, CVE-2026-63356, CVE-2026-63357)
SIMATIC ET 200SP CPU 1510SP-1 PN (6ES...
Oct 22, 2026·CISA Advisories
Affected product
SD
SIMATIC Drive Controller CPU 1504D TF
Siemens
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-63357
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-63357
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-591731.html
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