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CVE-2024-55549

Xmlsoft Libxslt use-after-free

7.8 HIGHPublic exploitEPSS 0.36%
  1. Published14 Mar 2025

Description

xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion of result prefixes.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityHigh
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H

Affected products

Xmlsoft Libxslt< 1.1.43

Remediation

Fixed in
Xmlsoft Libxslt≥ 1.1.43

References

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Frequently asked

Is CVE-2024-55549 being actively exploited?

CVE-2024-55549 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.36%.

How severe is CVE-2024-55549?

CVE-2024-55549 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.36% probability of exploitation.

Which products are affected by CVE-2024-55549?

Affected products include Xmlsoft Libxslt.

How do I fix CVE-2024-55549?

Upgrade affected software to a fixed version, for example Xmlsoft Libxslt 1.1.43 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-55549 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.