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CVE-2025-24855

Xmlsoft Libxslt use-after-free

7.8 HIGHPublic exploitEPSS 0.36%
  1. Published14 Mar 2025

Description

numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an XPath context node can be modified but never restored. This is related to xsltNumberFormatGetValue, xsltEvalXPathPredicate, xsltEvalXPathStringNs, and xsltComputeSortResultInternal.

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-2025-24855 being actively exploited?

CVE-2025-24855 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-2025-24855?

CVE-2025-24855 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-2025-24855?

Affected products include Xmlsoft Libxslt.

How do I fix CVE-2025-24855?

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-2025-24855 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.