CVE-2025-6196 — MEDIUM (5.5)

Vulnerability 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.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Gnome	Libgepub	-
Redhat	Enterprise Linux	7.0

Related Weaknesses (CWE)

CWE-190

References

https://access.redhat.com/security/cve/CVE-2025-6196MitigationThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2373117Issue TrackingThird Party Advisory
https://gitlab.gnome.org/GNOME/libgepub/-/issues/18ExploitIssue TrackingThird Party Advisory

FAQ

What is CVE-2025-6196?

CVE-2025-6196 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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...

How severe is CVE-2025-6196?

CVE-2025-6196 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-6196?

Check the references section above for vendor advisories and patch information. Affected products include: Gnome Libgepub, Redhat Enterprise Linux.