CVE-2021-28025
Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and...
Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and 6.2, allows local attackers to cause a denial of service (DoS).
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
5.5
Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and 6.2, allows local attackers to cause a denial of service (DoS).
- Record
CVE-2021-28025- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
CVE List No score
Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and 6.2, allows local attackers to cause a denial of service (DoS).
- Record
CVE-2021-28025- Updated
- 2026-11-02
EUVDEUVD-2021-14743 No score
Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and 6.2, allows local attackers to cause a denial of service (DoS).
- Record
EUVD-2021-14743- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-3w9r-2mqj-cf5c
5.5
Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and...
Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and 6.2, allows local attackers to cause a denial of service (DoS).
- Record
GHSA-3w9r-2mqj-cf5c- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Weakness
- CWE-190
- Updated
- 2026-11-02
OSV
5.5
Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and 6.2, allows local attackers to cause a denial of service (DoS).
- Record
CVE-2021-28025- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2021-28025
5.5
Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and 6.2, allows local attackers to cause a denial of service (DoS).
- Record
DEBIAN-CVE-2021-28025- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2021-28025
5.5
Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and 6.2, allows local attackers to cause a denial of service (DoS).
- Record
UBUNTU-CVE-2021-28025- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUSN-8337-1 No score
qtsvg-opensource-src vulnerabilities
It was discovered that QtSvg incorrectly handled certain SVG images. An attacker could possibly use this issue to cause QtSvg to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-19869)
It was discovered that QtSvg incorrectly handled certain SVG images. An attacker could use this issue to cause QtSvg to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-3481, CVE-2021-28025, CVE-2021-45930)
It was discovered that QtSvg incorrectly handled certain SVG images. An attacker could use this issue to cause QtSvg to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-32573)
- Record
USN-8337-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
qtsvg-opensource-srcDebian:12 |
before 5.15.4-2 | 5.15.4-2 |
qtsvg-opensource-srcDebian:13 |
before 5.15.4-2 | 5.15.4-2 |
qtsvg-opensource-srcDebian:14 |
before 5.15.4-2 | 5.15.4-2 |
qt4-x11Ubuntu:14.04:LTS |
All versions, plus listed versions 4:4.8.4+dfsg-0ubuntu184:4.8.4+dfsg-0ubuntu194:4.8.4+dfsg-0ubuntu204:4.8.4+dfsg-0ubuntu214:4.8.4+dfsg-0ubuntu224:4.8.5+git192-g085f851+dfsg-2ubuntu34:4.8.5+git192-g085f851+dfsg-2ubuntu44:4.8.5+git192-g085f851+dfsg-2ubuntu4.1 |
None known |
qt4-x11Ubuntu:16.04:LTS |
All versions, plus listed versions 4:4.8.6+git64-g5dc8b2b+dfsg-3~ubuntu84:4.8.7+dfsg-5ubuntu14:4.8.7+dfsg-5ubuntu2 |
None known |
qtsvg-opensource-srcUbuntu:Pro:16.04:LTS |
before 5.5.1-2ubuntu0.1~esm1, plus listed versions 5.4.2-2build15.5.1-2build1 |
5.5.1-2ubuntu0.1~esm1 |
qt4-x11Ubuntu:18.04:LTS |
All versions, plus listed versions 4:4.8.7+dfsg-7ubuntu1 |
None known |
qtsvg-opensource-srcUbuntu:Pro:20.04:LTS |
before 5.12.8-0ubuntu1+esm1, plus listed versions 5.12.4-15.12.5-25.12.5-2build15.12.8-0ubuntu1 |
5.12.8-0ubuntu1+esm1 |
qt6-svgUbuntu:22.04:LTS |
All versions, plus listed versions 6.2.2-2ubuntu16.2.4-1ubuntu1 |
None known |
qt6-svgUbuntu:24.04:LTS |
All versions, plus listed versions 6.4.2-4ubuntu16.4.2-4ubuntu26.4.2-4ubuntu3 |
None known |
Show 7 moreShow less
| Package | Affected | Fixed |
|---|---|---|
qt6-svgUbuntu:25.10 |
All versions, plus listed versions 6.8.3-0ubuntu16.9.2-1 |
None known |
qt6-svgUbuntu:26.10 |
All versions, plus listed versions 6.10.2-26.10.2-8ubuntu16.10.2-96.11.2-1 |
None known |
qt6-svgUbuntu:26.04:LTS |
All versions, plus listed versions 6.9.2-16.9.2-46.9.2-56.10.2-2 |
None known |
qtsvg-opensource-srcUbuntu:Pro:16.04:LTS From an advisory covering 5 CVEs |
before 5.5.1-2ubuntu0.1~esm1, plus listed versions 5.4.2-2build15.5.1-2build1 |
5.5.1-2ubuntu0.1~esm1 |
qtsvg-opensource-srcUbuntu:Pro:18.04:LTS From an advisory covering 5 CVEs |
before 5.9.5-0ubuntu1.1+esm1, plus listed versions 5.9.1-25.9.2-25.9.2-35.9.3-0ubuntu15.9.4-0ubuntu15.9.5-0ubuntu15.9.5-0ubuntu1.1 |
5.9.5-0ubuntu1.1+esm1 |
qtsvg-opensource-srcUbuntu:Pro:20.04:LTS From an advisory covering 5 CVEs |
before 5.12.8-0ubuntu1+esm1, plus listed versions 5.12.4-15.12.5-25.12.5-2build15.12.8-0ubuntu1 |
5.12.8-0ubuntu1+esm1 |
qtsvg-opensource-srcUbuntu:Pro:22.04:LTS From an advisory covering 5 CVEs |
before 5.15.3-1ubuntu0.1~esm1, plus listed versions 5.15.2-35.15.2-45.15.3-1 |
5.15.3-1ubuntu0.1~esm1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-28025 is a medium vulnerability (CVSS 5.5) in Qt, published August 11, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 21st percentile. Fixed in qtsvg-opensource-src 5.15.4-2.