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TI-2021-02443 Aliases CVE-2021-3481GHSA-jgc8-vf4g-2f67

Out-of-bounds read in qt

Priority LOW 32CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Partial Red Hat: 2 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

A flaw was found in Qt. An out-of-bounds read vulnerability was found in QRadialFetchSimd in qt/qtbase/src/gui/painting/qdrawhelper_p.h in Qt/Qtbase. While rendering and displaying a crafted Scalable Vector Graphics (SVG) file this flaw may lead to an unauthorized memory access. The highest threat from this vulnerability is to data confidentiality and the application availability.

Why it matters now

EPSS 0.00544 45th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 1 advisoryRed Hat: 2 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—qtFixed in qt 5.12.11, qt 5.15.4, qt 6.0.3, qt 6.1.0RC.—No fix listedCNA
  • qt Vendor— Affected Fixed in qt 5.12.11, qt 5.15.4, qt 6.0.3, qt 6.1.0RC. Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:qt:qt:5.15.1:*:*:*:*:*:*:*5.15.1Vulnerableqt
cpe:2.3:a:qt:qt:6.0.0:-:*:*:*:*:*:*6.0.0Vulnerableqt
cpe:2.3:a:qt:qt:6.0.2:*:*:*:*:*:*:*6.0.2Vulnerableqt
cpe:2.3:a:qt:qt:6.2.0:-:*:*:*:*:*:*6.2.0Vulnerableqt
  • cpe:2.3:a:qt:qt:5.15.1:*:*:*:*:*:*:* Versions 5.15.1 Vulnerable ·qt
  • cpe:2.3:a:qt:qt:6.0.0:-:*:*:*:*:*:* Versions 6.0.0 Vulnerable ·qt
  • cpe:2.3:a:qt:qt:6.0.2:*:*:*:*:*:*:* Versions 6.0.2 Vulnerable ·qt
  • cpe:2.3:a:qt:qt:6.2.0:-:*:*:*:*:*:* Versions 6.2.0 Vulnerable ·qt

Remediation

Red Hat 1 advisory

  • RHSA-2021:4172 Released 2021-11-09 · Red Hat rating Moderate
    qt5 security, bug fix, and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) python3-qt5-devel-5.15.0-2.el8, python3-sip-devel-4.19.24-2.el8, qt5-devel-5.15.2-1.el8 +7
    • Red Hat Enterprise Linux AppStream (v. 8) adwaita-qt-1.2.1-3.el8, adwaita-qt5-1.2.1-3.el8, libadwaita-qt5-1.2.1-3.el8 +47

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:4172
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:4172
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-3481
  2. 2026-10-03 Alias added: GHSA-jgc8-vf4g-2f67

References

Exploit 1

Advisory 3

Other 1

  • TI-2024-23902 QAbstractOAuth in Qt Network Authorization in Qt before 5.15.17, 6.x before 6.2.13, 6.3.x… CVSS 3.1CRITICAL 9.8
  • TI-2022-21359 Heap-based buffer overflow in Qt CVSS 3.1HIGH 8.8
  • TI-2022-19524 Integer overflow in Qt CVSS 3.1HIGH 8.8
  • TI-2023-18997 In Qt before 5.15.15, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.2, there can… CVSS 3.1HIGH 7.5
  • TI-2021-09305 Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0… CVSS 3.1MEDIUM 5.5
  • TI-2023-28356 An issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before… CVSS 3.1CRITICAL 9.8
See all 57 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences