Libxml: heap use after free (uaf) leads to denial of service (dos)
CVSS score
9.1
EPSS probability
%0.8
Risk score
0.1
Published
1 y ago
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Vulnerability description
DayBreach CVE AI Research
CVE-2025-49794 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
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.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2025-49794 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | redhat | libxml2 | View |
| 2 | Red Hat | Red Hat Enterprise Linux 10 | View |
| 3 | Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support | View |
| 4 | Red Hat | Red Hat Enterprise Linux 8 | View |
| 5 | Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support | View |
| 6 | Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | View |
| 7 | Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | View |
| 8 | Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | View |
| 9 | Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service | View |
| 10 | Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | View |
| 11 | Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | View |
| 12 | Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | View |
| 13 | Red Hat | Red Hat Enterprise Linux 9 | View |
| 14 | Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | View |
| 15 | Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | View |
| 16 | Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | View |
| 17 | Red Hat | Red Hat JBoss Core Services 2.4.62.SP2 | View |
| 18 | Red Hat | Red Hat OpenShift Container Platform 4.12 | View |
| 19 | Red Hat | Red Hat OpenShift Container Platform 4.13 | View |
| 20 | Red Hat | Red Hat OpenShift Container Platform 4.14 | View |
| 21 | Red Hat | Red Hat OpenShift Container Platform 4.15 | View |
| 22 | Red Hat | Red Hat OpenShift Container Platform 4.16 | View |
| 23 | Red Hat | Red Hat OpenShift Container Platform 4.17 | View |
| 24 | Red Hat | Red Hat OpenShift Container Platform 4.18 | View |
| 25 | Red Hat | Red Hat OpenShift Container Platform 4.19 | View |
| 26 | Red Hat | Red Hat OpenShift Container Platform 4.20 | View |
| 27 | Red Hat | Red Hat Web Terminal 1.11 on RHEL 9 | View |
| 28 | Red Hat | Red Hat Web Terminal 1.11 on RHEL 9 | View |
| 29 | Red Hat | Red Hat Web Terminal 1.12 on RHEL 9 | View |
| 30 | Red Hat | RHOSS-1.36-RHEL-8 | View |
| 31 | Red Hat | RHOSS-1.36-RHEL-8 | View |
| 32 | Red Hat | RHOSS-1.36-RHEL-8 | View |
| 33 | Red Hat | RHOSS-1.36-RHEL-8 | View |
| 34 | Red Hat | RHOSS-1.36-RHEL-8 | View |
| 35 | Red Hat | RHOSS-1.36-RHEL-8 | View |
| 36 | Red Hat | RHOSS-1.36-RHEL-8 | View |
| 37 | Red Hat | cert-manager operator for Red Hat OpenShift 1.16 | View |
| 38 | Red Hat | OpenShift File Integrity Operator - FIO 1 | View |
| 39 | Red Hat | Red Hat Hardened Images | View |
| 40 | Red Hat | Red Hat Insights proxy 1.5 | View |
| 41 | Red Hat | Red Hat 3scale API Management Platform 2 | View |
| 42 | Red Hat | Red Hat Enterprise Linux 6 | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 9.1 | CVSS V3_1 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H | CVE CNA |
| 9.1 | CVSS V31 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-49794 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-49794 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
Get this vulnerability through the API
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