CVE-2025-40901

Summary

A Stored HTML Injection vulnerability was discovered in the Credentials Manager functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can define a malicious identity containing HTML tags. When a victim attempts to delete the affected identity, the injected HTML renders in their browser, enabling phishing and possibly open redirect attacks. Full XSS exploitation and direct information disclosure are prevented by the existing input validation and Content Security Policy configuration.

Affected Software

Weaknesses

• CWE-79: CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

Workarounds

Use internal firewall features to limit access to the web management interface. Review all accounts with administrative access to it and delete unnecessary ones. Review existing identities stored in the Credentials Manager.

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://cert-portal.siemens.com/productcert/html/ssa-827968.html

References

• https://security.nozominetworks.com/NN-2026:4-01

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