Cyber Resilience

CVE-2025-49794

CriticalUpdated

Published: 16 June 2025

Published
16 June 2025
Modified
02 June 2026
KEV Added
Patch
CVSS Score v3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
EPSS Score 0.0044 63.9th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-49794 is a critical-severity Expired Pointer Dereference (CWE-825) vulnerability in Siemens (inferred from references). Its CVSS base score is 9.1 (Critical).

Operationally, ranked in the top 36.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under certain circumstances when the XML schematron has the <sch:name path="..."/> schema elements. This flaw allows a malicious actor to craft a malicious XML document used…

more

as input for libxml, resulting in the program's crash using libxml or other possible undefined behaviors.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

Siemens
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References