CVE-2021-3481

HIGH

Published Aug 22, 20223y ago · Modified Jun 17, 20262w ago

7.1 CVSS 3.1

High

Published Aug 22, 2022 3y ago

Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score

7.1

Exploitability

1.8

Impact

5.2

Vector string

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

Attack Vector Local

Attack Complexity Low

Privileges Required None

User Interaction Required

Scope Unchanged

Confidentiality High

Integrity None

Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status

Public Exploit Known

No Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 4

Vendor	Product	Version	Range
qt	qt	5.15.1	any
qt	qt	6.0.0	any
qt	qt	6.0.2	any
qt	qt	6.2.0	any

References 5

access.redhat.com https://access.redhat.com/security/cve/CVE-2021-3481

Third Party Advisory
bugreports.qt.io https://bugreports.qt.io/browse/QTBUG-91507

ExploitVendor Advisory
bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1931444

Issue TrackingThird Party Advisory
codereview.qt-project.org https://codereview.qt-project.org/c/qt/qtsvg/+/337646

Vendor Advisory
lists.debian.org https://lists.debian.org/debian-lts-announce/2023/08/msg00028.html

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.