CVE-2021-38593

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Summary

CVECVE-2021-38593
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-08-12 02:15:06 UTC
Updated2026-11-02 19:17:44 UTC
DescriptionQt 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).

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.030020000 probability, percentile 0.873720000 (date 2026-11-02)

Problem Types: CWE-787 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
2.0[email protected]Primary5AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial

AV:N/AC:L/Au:N/C:N/I:N/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 35 All All All
Operating System Fedoraproject Fedora 36 All All All
Application Qt Qt All All All All
Application Qt Qt All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Improve fix for avoiding huge number of tiny dashes · qt/qtbase@6b400e3 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
Improve fix for avoiding huge number of tiny dashes · qt/qtbase@202143b · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
Qt 5.15 Extended Support for subscription license holders af854a3a-2127-422b-91ae-364da2661108 www.qt.io Release Notes
35566 - oss-fuzz - OSS-Fuzz: Fuzzing the planet - Monorail af854a3a-2127-422b-91ae-364da2661108 bugs.chromium.org Issue Tracking, Patch, Third Party Advisory
QtGui: Multiple Vulnerabilities (GLSA 202402-03) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org
oss-fuzz-vulns/OSV-2021-903.yaml at main · google/oss-fuzz-vulns · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Third Party Advisory
Qt 5.15 Release - Qt Wiki af854a3a-2127-422b-91ae-364da2661108 wiki.qt.io Issue Tracking, Release Notes, Vendor Advisory
Improve fix for avoiding huge number of tiny dashes · qt/qtbase@1ca02cf · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
[SECURITY] Fedora 36 Update: qt5-qtbase-5.15.3-2.fc36 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] Fedora 35 Update: qt5-qtbase-5.15.2-31.fc35 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org
[SECURITY] Fedora 35 Update: qt5-qtbase-5.15.2-31.fc35 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 36 Update: qt5-qtbase-5.15.3-2.fc36 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159813 Oracle Enterprise Linux Security Update for qt5-qtbase (ELSA-2022-1796)
  • 198505 Ubuntu Security Notification for Qt Vulnerabilities (USN-5081-1)
  • 240315 Red Hat Update for qt5-qtbase (RHSA-2022:1796)
  • 282794 Fedora Security Update for qt5 (FEDORA-2022-54760f7fa4)
  • 282825 Fedora Security Update for qt5 (FEDORA-2022-4131ced81a)
  • 354803 Amazon Linux Security Advisory for qt5-qtbase : ALAS2-2023-1967
  • 710852 Gentoo Linux QtGui Multiple Vulnerabilities (GLSA 202402-03)
  • 900308 CBL-Mariner Linux Security Update for qt5-qtbase 5.12.11
  • 901007 Common Base Linux Mariner (CBL-Mariner) Security Update for qt5-qtsvg (6838-1)
  • 902949 Common Base Linux Mariner (CBL-Mariner) Security Update for qt5-qtsvg (5930)
  • 905830 Common Base Linux Mariner (CBL-Mariner) Security Update for qt5-qtsvg (5930-1)
  • 906494 Common Base Linux Mariner (CBL-Mariner) Security Update for qt5-qtsvg (6838-2)
  • 907990 Common Base Linux Mariner (CBL-Mariner) Security Update for qt5-qtbase (34211-1)
  • 940494 AlmaLinux Security Update for qt5-qtbase (ALSA-2022:1796)
  • 960370 Rocky Linux Security Update for qt5-qtbase (RLSA-2022:1796)

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