How severe is CVE-2021-28025?

CVE-2021-28025 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-28025 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28025?

CVE-2021-28025 primarily affects Qt. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-28025?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-28025 published?

CVE-2021-28025 was published on 2023-08-11 and last updated on 2026-06-17.

CVE-2021-28025

CVE-2021-28025 is a medium-severity vulnerability in Qt with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-190.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-190
Affected product: Qt
Published: 2023-08-11
Last modified: 2026-06-17

Description

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).

Frequently asked questions

What is CVE-2021-28025?: 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).
How severe is CVE-2021-28025?: CVE-2021-28025 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-28025 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28025?: CVE-2021-28025 primarily affects Qt. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-28025?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-28025 published?: CVE-2021-28025 was published on 2023-08-11 and last updated on 2026-06-17.

References

https://bugreports.qt.io/browse/QTBUG-91507

Affected products (18)

cpe:2.3:a:qt:qt:5.15.1:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.0.0:-:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.0.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.0.0:beta1:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.0.0:beta2:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.0.0:beta3:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.0.0:beta4:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.0.0:beta5:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.0.0:rc1:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.0.0:rc2:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.0.2:*:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.2.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.2.0:beta1:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.2.0:beta2:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.2.0:beta3:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.2.0:beta4:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.2.0:rc1:*:*:*:*:*:*
cpe:2.3:a:qt:qt:6.2.0:rc2:*:*:*:*:*:*

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