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CVE Record

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

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.

CriticalCVSS 9.1Not KEV-listedUpdated
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Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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CWE-825: Exact CWE lookup

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Container behavior lookup

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CVE-2025-49794 mapping review

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.1 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
5Timeline events
3ADP providers
35Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: yesTechnical Impact: partial

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
9.1CVSS 3.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H3.95.2redhat

Vulnerability scoring details

Base CVSS 3.1 score

9.1Critical
CVSS 3.1 vector shape for CVE-2025-49794Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. Source timelineredhat

    Made public.

  2. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  3. Source timelineredhat

    Reported to Red Hat.

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container
siemens-SADPADP container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Unknown vendorlibxml2libxml2, 0unaffected
Red HatRed Hat Enterprise Linux 10libxml2, 0:2.12.5-7.el10_0affected
Red HatRed Hat Enterprise Linux 7 Extended Lifecycle Supportlibxml2, 0:2.9.1-6.el7_9.10affected
Red HatRed Hat Enterprise Linux 8libxml2, 0:2.9.7-21.el8_10.1affected
Red HatRed Hat Enterprise Linux 8libxml2, 0:2.9.7-21.el8_10.1affected
Red HatRed Hat Enterprise Linux 8.2 Advanced Update Supportlibxml2, 0:2.9.7-9.el8_2.3affected
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportlibxml2, 0:2.9.7-9.el8_4.6affected
Red HatRed Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onlibxml2, 0:2.9.7-9.el8_4.6affected
Red HatRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportlibxml2, 0:2.9.7-13.el8_6.10affected
Red HatRed Hat Enterprise Linux 8.6 Telecommunications Update Servicelibxml2, 0:2.9.7-13.el8_6.10affected
Red HatRed Hat Enterprise Linux 8.6 Update Services for SAP Solutionslibxml2, 0:2.9.7-13.el8_6.10affected
Red HatRed Hat Enterprise Linux 8.8 Telecommunications Update Servicelibxml2, 0:2.9.7-16.el8_8.9affected
Red HatRed Hat Enterprise Linux 8.8 Update Services for SAP Solutionslibxml2, 0:2.9.7-16.el8_8.9affected
Red HatRed Hat Enterprise Linux 9libxml2, 0:2.9.13-10.el9_6affected
Red HatRed Hat Enterprise Linux 9libxml2, 0:2.9.13-10.el9_6affected
Red HatRed Hat Enterprise Linux 9.0 Update Services for SAP Solutionslibxml2, 0:2.9.13-1.el9_0.5affected
Red HatRed Hat Enterprise Linux 9.2 Update Services for SAP Solutionslibxml2, 0:2.9.13-3.el9_2.7affected
Red HatRed Hat Enterprise Linux 9.4 Extended Update Supportlibxml2, 0:2.9.13-10.el9_4affected
Red HatRed Hat JBoss Core Services 2.4.62.SP2libxml2unaffected
Red HatRed Hat OpenShift Container Platform 4.12openshift/ose-rhel-coreos-8, 412.86.202510291903-0affected
Red HatRed Hat OpenShift Container Platform 4.13openshift/ose-rhel-coreos-9, 413.92.202510150118-0affected
Red HatRed Hat OpenShift Container Platform 4.14openshift/ose-rhel-coreos-9, 414.92.202510211419-0affected
Red HatRed Hat OpenShift Container Platform 4.15openshift/ose-rhel-coreos-9, 415.92.202609140326-0affected
Red HatRed Hat OpenShift Container Platform 4.16openshift/ose-rhel-coreos-9, 416.94.202609011112-0affected
Red HatRed Hat OpenShift Container Platform 4.17openshift/ose-rhel-coreos-9, 417.94.202510112152-0affected
Red HatRed Hat OpenShift Container Platform 4.18openshift/ose-rhel-coreos-9, 418.94.202510230424-0affected
Red HatRed Hat OpenShift Container Platform 4.19openshift/ose-rhel-coreos-9, 4.19.9.6.202510140714-0affected
Red HatRed Hat OpenShift Container Platform 4.20openshift/ose-rhel-coreos-9, 4.20.9.6.202509251656-0affected
Red HatRed Hat Web Terminal 1.11 on RHEL 9web-terminal/web-terminal-rhel9-operator, 1.11-19affected
Red HatRed Hat Web Terminal 1.11 on RHEL 9web-terminal/web-terminal-tooling-rhel9, 1.11-8affected
Weakness

CWE details

CWE-825

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-825 · source CWE mapping

Expired Pointer Dereference

Expired Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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