CVE-2025-3512

4.8 mediumEPSS 0.2%

Medium (4.8). EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

4.8 medium

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/U:Clear

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 13% of CVEs (scores of 2026-10-31)
CWE: CWE-122
Published: 2025-04-11
Modified: 2026-07-29
Record from: the NVD, synced 2026-10-19

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

Check your stack JSON