How severe is CVE-2025-6196?

CVE-2025-6196 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-6196 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-6196?

CVE-2025-6196 affects Gnome Libgepub. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-6196?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-6196 have an EU (EUVD) identifier?

Yes. CVE-2025-6196 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18504.

When was CVE-2025-6196 published?

CVE-2025-6196 was published on 2025-06-17 and last updated on 2026-06-17.

CVE-2025-6196

CVE-2025-6196 is a medium-severity vulnerability in Gnome Libgepub with a CVSS 3.x base score of 5.5. 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-190.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18504
Weakness: CWE-190
Affected product: Gnome Libgepub
Published: 2025-06-17
Last modified: 2026-06-17

Description

A flaw was found in libgepub, a library used to read EPUB files. The software mishandles file size calculations when opening specially crafted EPUB files, leading to incorrect memory allocations. This issue causes the application to crash. Known affected usage includes desktop services like Tumbler, which may process malicious files automatically when browsing directories. While no direct remote attack vectors are confirmed, any application using libgepub to parse user-supplied EPUB content could be vulnerable to a denial of service.

Frequently asked questions

What is CVE-2025-6196?: A flaw was found in libgepub, a library used to read EPUB files. The software mishandles file size calculations when opening specially crafted EPUB files, leading to incorrect memory allocations. This issue causes the application to crash. Known affected usage includes desktop services like Tumbler, which may process malicious files automatically when browsing directories. While no direct remote attack vectors are confirmed, any application using libgepub to parse user-supplied EPUB content could be vulnerable to a denial of service.
How severe is CVE-2025-6196?: CVE-2025-6196 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-6196 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-6196?: CVE-2025-6196 affects Gnome Libgepub. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-6196?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-6196 have an EU (EUVD) identifier?: Yes. CVE-2025-6196 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18504.
When was CVE-2025-6196 published?: CVE-2025-6196 was published on 2025-06-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gnome:libgepub:-:*:*:*:*:*:*:*

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