How severe is CVE-2022-43591?

CVE-2022-43591 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-43591 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-43591?

CVE-2022-43591 affects Qt. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-43591?

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-2022-43591 published?

CVE-2022-43591 was published on 2023-01-12 and last updated on 2026-06-17.

CVE-2022-43591

CVE-2022-43591 is a high-severity vulnerability in Qt with a CVSS 3.x base score of 8.8. 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-122.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-122
Affected product: Qt
Published: 2023-01-12
Last modified: 2026-06-17

Description

A buffer overflow vulnerability exists in the QML QtScript Reflect API of Qt Project Qt 6.3.2. A specially-crafted javascript code can trigger an out-of-bounds memory access, which can lead to arbitrary code execution. Target application would need to access a malicious web page to trigger this vulnerability.

Frequently asked questions

What is CVE-2022-43591?: A buffer overflow vulnerability exists in the QML QtScript Reflect API of Qt Project Qt 6.3.2. A specially-crafted javascript code can trigger an out-of-bounds memory access, which can lead to arbitrary code execution. Target application would need to access a malicious web page to trigger this vulnerability.
How severe is CVE-2022-43591?: CVE-2022-43591 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-43591 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-43591?: CVE-2022-43591 affects Qt. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-43591?: 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-2022-43591 published?: CVE-2022-43591 was published on 2023-01-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:qt:qt:6.3.2:*:*:*:*:*:*:*

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