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Fencer Vulns
medium 5.5

CVE-2021-28025 json

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 den…

published 2023-08-11 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14743

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

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).

Patch / fix

  • qtsvg-opensource-src Debian 14, Debian 13, Debian 12 5.15.4-2

debian advisories DEBIAN-CVE-2021-28025

  • qtsvg-opensource-src Ubuntu Pro 16.04 LTS 5.5.1-2ubuntu0.1~esm1
  • qtsvg-opensource-src Ubuntu Pro 20.04 LTS 5.12.8-0ubuntu1+esm1

ubuntu advisories UBUNTU-CVE-2021-28025

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-28025 updated cvss 5.5

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

  • Red Hat Enterprise Linux 7 qt5-qtsvg, qt5-qtsvg-examples
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 qt5-qtsvg, qt5-qtsvg-examples Red Hat Enterprise Linux 9 qt5-qtsvg, qt5-qtsvg-examples
    affected: no fix available

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugreports.qt.io https://bugreports.qt.io/browse/QTBUG-91507 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.