CVE-2025-497949.1CriticalCWE-825

CVE-2025-49794: Libxml: heap use after free (uaf) leads to denial of service (dos)

Siemens · libxml2

Vendor fix available · Affected: Siemens libxml2 · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.9%probability of exploitation in the next 30 days

59th percentile

050100

Higher than 59% of scored CVEs

9.1CriticalCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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

Affected products20

From the CVE record. A product or version that is not listed is unknown, not unaffected.

libxml2before 2.15.0
Red Hat · Red Hat Enterprise Linux 10Versions not stated
Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 8Versions not stated
Red Hat · Red Hat Enterprise Linux 8Versions not stated
Red Hat · Red Hat Enterprise Linux 8.2 Advanced Update SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnVersions not stated
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportVersions not stated
Red Hat · Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceVersions not stated
Red Hat · Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsVersions not stated
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceVersions not stated
Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsVersions not stated
Red Hat · Red Hat Enterprise Linux 9Versions not stated
Red Hat · Red Hat Enterprise Linux 9Versions not stated
Red Hat · Red Hat Enterprise Linux 9.0 Update Services for SAP SolutionsVersions not stated
Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP SolutionsVersions not stated
Red Hat · Red Hat Enterprise Linux 9.4 Extended Update SupportVersions not stated
Red Hat · Red Hat JBoss Core Services 2.4.62.SP2Versions not stated
Red Hat · Red Hat OpenShift Container Platform 4.12Versions not stated

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Expired Pointer Dereference · Memory Corruption
Vendor: Siemens
Published: June 2025
Band: Unlikely (under 1%), June 2025

CoverageNo articles yet

No CyberSIXT article names CVE-2025-49794 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References

22 more references are in the CVE record.