How severe is CVE-2020-24742?

CVE-2020-24742 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-24742 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-24742?

CVE-2020-24742 affects Qt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-24742?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-24742 published?

CVE-2020-24742 was published on 2021-08-09 and last updated on 2026-06-17.

CVE-2020-24742

CVE-2020-24742 is a high-severity vulnerability in Qt with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Qt
Published: 2021-08-09
Last modified: 2026-06-17

Description

An issue has been fixed in Qt versions 5.14.0 where QPluginLoader attempts to load plugins relative to the working directory, allowing attackers to execute arbitrary code via crafted files.

Frequently asked questions

What is CVE-2020-24742?: An issue has been fixed in Qt versions 5.14.0 where QPluginLoader attempts to load plugins relative to the working directory, allowing attackers to execute arbitrary code via crafted files.
How severe is CVE-2020-24742?: CVE-2020-24742 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-24742 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-24742?: CVE-2020-24742 affects Qt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-24742?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-24742 published?: CVE-2020-24742 was published on 2021-08-09 and last updated on 2026-06-17.

References

https://codereview.qt-project.org/c/qt/qtbase/+/280730

Affected products (1)

cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*

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