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CVE-2025-3512
Buffer overflow in QTextMarkdownImporter
Medium4.8EPSS 0.23%
- Published
- Updated
- Reserved
- Assigned by
- TQtC
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| TQtCCNA (assigner) | 4.0 | Medium4.8 | 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 |
| NVDNVD · Deferred | 4.0 | Medium4.8 | 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 |
- EPSS (exploitation in 30 days)
- 0.23% · top 86% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.8.
Weakness
Affected products
References (6)
- https://codereview.qt-project.org/c/qt/qtbase/+/635546 (opens in a new tab)
- http://www.openwall.com/lists/oss-security/2025/04/24/4 (opens in a new tab)
- http://www.openwall.com/lists/oss-security/2025/04/24/5 (opens in a new tab)
- http://www.openwall.com/lists/oss-security/2025/04/24/6 (opens in a new tab)
- http://www.openwall.com/lists/oss-security/2025/04/25/1 (opens in a new tab)
- http://www.openwall.com/lists/oss-security/2025/04/25/2 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2025-3512)Record last updated .