Siemens Trace page cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.2$0-$5k1.47-

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Siemens. The impacted element is an unknown function of the component Trace page. This manipulation causes cross site scripting. This vulnerability appears as CVE-2026-63355. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in Siemens (affected version unknown) and classified as problematic. Affected by this vulnerability is an unknown functionality of the component Trace page. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

Affected devices do not properly sanitize signal names contained in imported CSV trace files before rendering them in selection menus 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. Attacker-controlled JavaScript could be executed in the user’s browser session when the user subsequently interacts with an affected selection menu.

It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is known as CVE-2026-63355 since 07/16/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are necessary for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-3891). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Siemens SIMATIC S7

Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 2.4
VulDB Temp Score: 2.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.1
CNA Vector (siemens): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/16/2026 CVE reserved
10/13/2026 +89 days Advisory disclosed
10/13/2026 +0 days VulDB entry created
10/14/2026 +1 days VulDB entry last update

Sourcesinfo

Advisory: cert-portal.siemens.com
Status: Confirmed

CVE: CVE-2026-63355 (🔒)
GCVE (CVE): GCVE-0-2026-63355
GCVE (VulDB): GCVE-100-417523
CERT Bund: WID-SEC-2026-3891 - Siemens SIMATIC S7: Mehrere Schwachstelle

Entryinfo

Created: 10/13/2026 12:05
Updated: 10/14/2026 05:40
Changes: 10/13/2026 12:05 (71), 10/14/2026 05:40 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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