CVE-2025-66412Network attack vector

Stored XSS via incomplete URL security schema

Published Dec 1, 2025 · Updated Jun 2, 2026

Stored XSS in the Angular Template Compiler before 19.2.17, 20.3.15, and 21.0.2 allows remote authenticated users to execute scripts. Its security schema assigns no URL-sanitizing context to affected SVG and MathML URL attributes and fails to reject dynamic SVG animation targets such as href. Exploitation requires an application to bind stored, attacker-controlled data to an affected attribute; execution follows victim interaction or an automatically triggered animation.

CVSS severity8.5
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in the Angular Template Compiler before 19.2.17, 20.3.15, and 21.0.2 allows remote authenticated users to execute scripts. Its security schema assigns no URL-sanitizing context to affected SVG and MathML URL attributes and fails to reject dynamic SVG animation targets such as href. Exploitation requires an application to bind stored, attacker-controlled data to an affected attribute; execution follows victim interaction or an automatically triggered animation.

The record

CVE
CVE-2025-66412
Published
Dec 1, 2025
Updated
Jun 2, 2026
Vendor
Siemens
Product
RUGGEDCOM RST2428P
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <V4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · RUGGEDCOM RST2428Pversion=0 <V4.0
Siemens · SIDIS Primeversion=0 <V4.0.800
Angular · Angularversion=<= 18.2.14; version=>= 19.0.0-next.0 < 19.2.17; version=>= 20.0.0-next.0 < 20.3.15; version=>= 21.0.0-next.0 < 21.0.2

Published CVSS scores

8.5GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.0Siemens ProductCERTCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
8.5Siemens ProductCERTCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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