CVE-2025-49796: Libxml: type confusion leads to denial of service (dos)

Published Jun 12, 2025
·
Updated

A vulnerability was found in libxml2. Processing certain sch:name elements from the input XML file can trigger a memory corruption issue. This flaw allows an attacker to craft a malicious XML input file that can lead libxml to crash, resulting in a denial of service or other possible undefined behavior due to sensitive data being corrupted in memory.

Affected Software

8 affected components
Gnome libxml2
F5 Traffix SDC=5.2.0
IBM Cloud Pak System<=2.3.4.0
IBM Cloud Pak System<=2.3.4.1 2.3.4.1 ifix1
IBM Cloud Pak System<=2.3.5.0
IBM Cloud Pak System<=2.3.6.0
IBM OS Image for Red Hat Linux Systems<=4.0.4.0 4.0.5.0 4.0.6.0 4.0.7.0
IBM OS Image for Red Hat Linux Systems<=5.0.0.0 5.0.1.0

Event History

Feb 19, 2024
News Published
via The Register·01:29 AM
Mar 11, 2024
News Published
via The Register·04:28 AM
Jun 17, 2024
News Published
via The Register·01:59 AM
Nov 25, 2024
News Published
via The Register·01:30 AM
Feb 17, 2025
News Published
via The Register·02:25 AM
Mar 16, 2025
News Published
via The Register·10:58 PM
Mar 30, 2025
News Published
via The Register·10:45 PM
Jun 12, 2025
Data Sourced
via Red Hat·12:37 AM
DescriptionSeverityAffected Software
Jun 16, 2025
CVE Published
via MITRE·03:14 PM
Data Sourced
via MITRE·03:14 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·04:15 PM
DescriptionSeverityWeakness
Jun 23, 2025
News Published
via The Register·12:33 AM
Aug 22, 2025
Advisory Published
via F5·05:31 PM
Data Sourced
via F5·05:31 PM
DescriptionSeverityWeaknessAffected Software
Jan 30, 2026
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software
Feb 8, 2026
News Published
via The Register·10:25 PM
News Published
via The Register·10:28 PM
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Frequently Asked Questions

1

What is the severity of CVE-2025-49796?

The severity of CVE-2025-49796 is classified as high due to its potential to cause denial of service.

2

How do I fix CVE-2025-49796?

To fix CVE-2025-49796, update to the latest version of libxml2 where the vulnerability is addressed.

3

What types of attacks can CVE-2025-49796 facilitate?

CVE-2025-49796 can facilitate denial of service attacks by crashing applications that rely on libxml2.

4

Which software is affected by CVE-2025-49796?

CVE-2025-49796 affects the GNOME libxml2 library.

5

What are the implications of CVE-2025-49796 for users?

The implications of CVE-2025-49796 for users include possible disruptions due to application crashes when processing malicious XML files.

Contact

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