CVE-2025-3512

Description

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.

Weakness Type (CWE)

CWE-122 CWE-122

References

Other References

https://codereview.qt-project.org/c/qt/qtbase/+/635546 http://www.openwall.com/lists/oss-security/2025/04/24/4 http://www.openwall.com/lists/oss-security/2025/04/24/5 http://www.openwall.com/lists/oss-security/2025/04/24/6 http://www.openwall.com/lists/oss-security/2025/04/25/1 http://www.openwall.com/lists/oss-security/2025/04/25/2

Frequently Asked Questions

What is CVE-2025-3512? +

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.

How do I check if I'm vulnerable to CVE-2025-3512? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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