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CVE-2025-6196— Libgepub: integer overflow in libgepub's epub archive handling

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 7
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

libgepub是danigm个人开发者的一个使用glib读取epub文件的简单库。 libgepub存在输入验证错误漏洞，该漏洞源于处理EPUB文件时错误计算文件大小，可能导致拒绝服务。

CVSS 5.5 · Medium EPSS 0.20% · P10

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-6196

Vulnerability Information
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Vulnerability Title
Libgepub: integer overflow in libgepub's epub archive handling
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
libgepub 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libgepub是danigm个人开发者的一个使用glib读取epub文件的简单库。 libgepub存在输入验证错误漏洞，该漏洞源于处理EPUB文件时错误计算文件大小，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7

II. Public POCs for CVE-2025-6196

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III. Intelligence Information for CVE-2025-6196

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IV. Related Vulnerabilities

Same weakness: CWE-190

V. Comments for CVE-2025-6196

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