Name: CVE-2025-3512: Heap-based Buffer Overflow
Creator: Rapid7
Published: 2025-04-11T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2025-3512, CWE-122, CVSS 4.8, EPSS 0.00227

There is a Heap-based Buffer Overflow vulnerability in QTextMarkdownImporter. This requires an incorrectly formatted markdown file to be passed to QTextMarkdownImporter to trigger the overflow.

This issue affects Qt from 6.8.0 to 6.8.4. Versions up to 6.6.0 are known to be unaffected, and the fix is in 6.8.4 and later.

CVSS Details

CVSS 4.0 Base Score: 4.8 (MEDIUM)
CVSS 4.0 Vector: (CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade qt6-base	Jul 23, 2026	Jul 23, 2026
Gentoo Linux	—	Upgrade dev-qt/qtbase.Upgrade dev-qt/qtgui.Upgrade dev-qt/qtnetwork.	Jun 13, 2025	Apr 11, 2025

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CVSS Details

Covered by Rapid7

Prioritise with Active Threat Intelligence