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CVE-2021-28025

18
FAUCET Score

CVE-2021-28025 is an Integer Overflow vulnerability in the qsvghandler.cpp component of Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and 6.2. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction, and potentially leading to a denial of service. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
5.15.1CPE matchmatch criteria
cpe:2.3:a:qt:qt:5.15.1:*:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:qt:qt:6.0.0:-:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:qt:qt:6.0.0:alpha1:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:qt:qt:6.0.0:beta1:*:*:*:*:*:*
6.0.0CPE matchmatch criteria
cpe:2.3:a:qt:qt:6.0.0:beta2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.27%
Probability of exploitation in next 30 days
EPSS Percentile
18.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0027 is in the 22nd percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

ubuntupatch availablevia ubuntu_usn
Product: qtsvg-opensource-src (bionic)Fixed in: 5.9.5-0ubuntu1.1+esm1
ubuntupatch availablevia ubuntu_usn
Product: qtsvg-opensource-src (focal)Fixed in: 5.12.8-0ubuntu1+esm1
ubuntupatch availablevia ubuntu_usn
Product: qtsvg-opensource-src (jammy)Fixed in: 5.15.3-1ubuntu0.1~esm1
ubuntupatch availablevia ubuntu_usn
Product: qtsvg-opensource-src (xenial)Fixed in: 5.5.1-2ubuntu0.1~esm1
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: qt5-qtsvg
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: qt5-qtsvg

Vendor Advisories (2)

ubuntuUSN-8337-1

QtSvg vulnerabilities

May 28, 2026
redhatCVE-2021-28025Moderate

qt-qtsvg: Out of bounds read in function `QRadialFetchSimd<QSimdSse2>::fetch` when input craft svg file

Aug 11, 2023

References

bugreports.qt.io / browse/QTBUG-91507
ExploitIssue TrackingVendor Advisory