How severe is CVE-2025-59375?

CVE-2025-59375 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-59375 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-59375?

CVE-2025-59375 affects Libexpat Project Libexpat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-59375?

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-2025-59375 have an EU (EUVD) identifier?

Yes. CVE-2025-59375 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29148.

When was CVE-2025-59375 published?

CVE-2025-59375 was published on 2025-09-15 and last updated on 2026-06-17.

CVE-2025-59375

CVE-2025-59375 is a high-severity vulnerability in Libexpat Project Libexpat with a CVSS 3.x base score of 7.5. 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-770.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-29148
Weakness: CWE-770
Affected product: Libexpat Project Libexpat
Published: 2025-09-15
Last modified: 2026-06-17

Description

libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.

Frequently asked questions

What is CVE-2025-59375?: libexpat in Expat before 2.7.2 allows attackers to trigger large dynamic memory allocations via a small document that is submitted for parsing.
How severe is CVE-2025-59375?: CVE-2025-59375 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-59375 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-59375?: CVE-2025-59375 affects Libexpat Project Libexpat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-59375?: 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-2025-59375 have an EU (EUVD) identifier?: Yes. CVE-2025-59375 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-29148.
When was CVE-2025-59375 published?: CVE-2025-59375 was published on 2025-09-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*

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