CVE-2021-38593
highQt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::…
Vendor / product: Qt — qt
Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).
CVSS
7.5
7.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2021-08-12 02:15
Modified: 2026-11-02 19:17
NVD status: Modified
Last synced 1 day ago
Verified against the source API 2026-11-03 07:33 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
qt / qt ≥5.0.0 <5.15.6, ≥6.0.0 ≤6.1.2
fedoraproject / fedora 35, 36
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://wiki.qt.io/Qt_5.15_Release#Known_Issues
Vendor advisory: https://wiki.qt.io/Qt_5.15_Release#Known_Issues
Patch / mitigation: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566
Patch / mitigation: https://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862
Patch / mitigation: https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccd
Patch / mitigation: https://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0c
Patch / mitigation: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566
Patch / mitigation: https://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862
Patch / mitigation: https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccd
Patch / mitigation: https://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0c
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566 cve@mitre.org
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-903.yaml cve@mitre.org
- https://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862 cve@mitre.org
- https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccd cve@mitre.org
- https://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0c cve@mitre.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/m... cve@mitre.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/m... cve@mitre.org
- https://security.gentoo.org/glsa/202402-03 cve@mitre.org
- https://wiki.qt.io/Qt_5.15_Release#Known_Issues cve@mitre.org
- https://www.qt.io/blog/qt-5.15-extended-support-for-subscription-license-holders cve@mitre.org
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566 af854a3a-2127-422b-91ae-364da2661108
- https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-903.yaml af854a3a-2127-422b-91ae-364da2661108
- https://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862 af854a3a-2127-422b-91ae-364da2661108
- https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccd af854a3a-2127-422b-91ae-364da2661108
- https://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0c af854a3a-2127-422b-91ae-364da2661108
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/m... af854a3a-2127-422b-91ae-364da2661108
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/m... af854a3a-2127-422b-91ae-364da2661108
- https://security.gentoo.org/glsa/202402-03 af854a3a-2127-422b-91ae-364da2661108
- https://wiki.qt.io/Qt_5.15_Release#Known_Issues af854a3a-2127-422b-91ae-364da2661108
- https://www.qt.io/blog/qt-5.15-extended-support-for-subscription-license-holders af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 07:33 UTC · record ↗