High

Stored XSS in Siemens SiPass integrated server applications

IdentifiersCVE-2025-40772CWE-79· Improper Neutralization of Input…

CVE-2025-40772 is a stored cross-site scripting vulnerability affecting Siemens SiPass integrated server applications in all versions prior to V3.0. The flaw allows an attacker to inject malicious script content into application data that is later rendered to other users when they visit the affected page. Because the payload is stored by the application and executed in other users’ browser sessions, exploitation can occur without requiring the victim to directly interact with attacker-hosted content. The available advisory information does not identify the exact vulnerable parameter or function, but confirms that the issue resides in affected server-side application pages that persist and later display attacker-controlled input.

For your environment

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows execution of attacker-supplied script in the context of another user’s authenticated session in SiPass integrated. This can enable session theft, impersonation of other users within the application, unauthorized actions performed as the victim, and potential privilege escalation if higher-privileged users view the malicious content. Depending on the victim’s role and browser session state, the attacker may gain unauthorized access to accounts and sensitive application data.

Mitigation

If you can’t patch tonight, do this now.

Restrict access to the application to authorized and trusted personnel only. Minimize network exposure of SiPass integrated systems, ensure they are not directly accessible from the internet, place control system networks and remote devices behind firewalls, and isolate them from business networks. Where remote access is required, use secure methods such as VPNs. General XSS risk reduction also depends on limiting untrusted content entry into the application until the upgrade can be completed.

Remediation

Patch, then assume compromise.

Upgrade Siemens SiPass integrated to V3.0 or later. Siemens identified V3.0 and newer as the fixed version for affected releases prior to V3.0.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

SiemensSipass Integratedapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

2 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity1