How severe is CVE-2025-24855?

CVE-2025-24855 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2025-24855 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-24855?

CVE-2025-24855 affects Xmlsoft Libxslt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-24855?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-24855 have an EU (EUVD) identifier?

Yes. CVE-2025-24855 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7659.

When was CVE-2025-24855 published?

CVE-2025-24855 was published on 2025-03-14 and last updated on 2026-06-17.

CVE-2025-24855

CVE-2025-24855 is a high-severity vulnerability in Xmlsoft Libxslt with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-7659
Weakness: CWE-416
Affected product: Xmlsoft Libxslt
Published: 2025-03-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-24855?: 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.
How severe is CVE-2025-24855?: CVE-2025-24855 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2025-24855 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-24855?: CVE-2025-24855 affects Xmlsoft Libxslt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-24855?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-24855 have an EU (EUVD) identifier?: Yes. CVE-2025-24855 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7659.
When was CVE-2025-24855 published?: CVE-2025-24855 was published on 2025-03-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:xmlsoft:libxslt:*:*:*:*:*:*:*:*

More vulnerabilities in Xmlsoft Libxslt

CVE-2019-11068 — Critical (CVSS 9.8): libxslt through 1.1.33 allows bypass of a protection mechanism because callers of xsltCheckRead and xsltCheckWrite…
CVE-2016-4610 — Critical (CVSS 9.8): libxslt in Apple iOS before 9.3.3, OS X before 10.11.6, iTunes before 12.4.2 on Windows, iCloud before 5.2.1 on…
CVE-2016-4609 — Critical (CVSS 9.8): libxslt in Apple iOS before 9.3.3, OS X before 10.11.6, iTunes before 12.4.2 on Windows, iCloud before 5.2.1 on…
CVE-2016-4608 — Critical (CVSS 9.8): libxslt in Apple iOS before 9.3.3, OS X before 10.11.6, iTunes before 12.4.2 on Windows, iCloud before 5.2.1 on…
CVE-2016-4607 — Critical (CVSS 9.8): libxslt in Apple iOS before 9.3.3, OS X before 10.11.6, iTunes before 12.4.2 on Windows, iCloud before 5.2.1 on…
CVE-2021-30560 — High (CVSS 8.8): Use after free in Blink XSLT in Google Chrome prior to 91.0.4472.164 allowed a remote attacker to potentially exploit…

All CVEs affecting Xmlsoft Libxslt →

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CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…

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