CVE-2023-37369
HighCVSS 7.5Exploitation Probability (EPSS)
Elevated risk67th percentile - higher than 67% of all known CVEs
Summary
In versions of Qt before 5.15.15, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.2, there can be an application crash in QXmlStreamReader via a crafted XML string that triggers a situation in which a prefix is greater than a length.
Risk Assessment
Application crashes may lead to system downtime or data loss, posing a threat to the continuity of organizational operations.
Recommendation
It is recommended to update Qt to version 5.15.15 or 6.2.9 and 6.5.2 or later to mitigate the risks associated with this vulnerability.
Other vulnerabilities in Qt
See all- CVE-2025-6338Critical
Incomplete cleanup in Qt Network's Schannel support on Windows can lead to a Denial of Service over time. Affects Qt from 5.15.0 through 6.8.3 and from 6.9.0 before 6.9.2.
- CVE-2023-51714Critical
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- CVE-2026-19248High
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- CVE-2026-9499Medium
An out-of-bounds read vulnerability in QTextCodec::codecForName() in Qt. When called with a non-NUL-terminated QByteArray, the codec-name matching routine reads past the buffer. This usually results in incorrect codec selection; worst case, it causes a crash (DoS). Affects Qt5Compat module from Qt 6.0.0 and Qt Core in Qt 4.x and 5.x.
- CVE-2025-12385High
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- CVE-2025-5992Low
A vulnerability in Qt's QColorTransferGenericFunction causes a denial of service when passing values outside the expected range, e.g., when processing a specially crafted ICC profile via QColorSpace::fromICCProfile. Affects Qt from 6.6.0 through 6.8.3 and from 6.9.0 through 6.9.1; fixed in 6.8.4 and 6.9.2.
- CVE-2025-5991Low
A Use-After-Free vulnerability in Qt's QHttp2ProtocolHandler in the QtNetwork module affects only HTTP/2 handling. It arises from a race condition between uploading POST request body and simultaneous handling of HTTP errors. Affects only Qt 6.9.0; fixed in Qt 6.9.1.
- CVE-2025-5683Medium
A vulnerability in Qt causes a crash when loading a specially crafted ICNS image file via QImage. Affects Qt versions 6.3.0 through 6.5.9, 6.6.0 through 6.8.4, and 6.9.0. Fixed in 6.5.10, 6.8.5, and 6.9.1.
- CVE-2025-5455High
An issue was found in the private API function qDecodeDataUrl() in QtCore, used in QTextDocument and QNetworkReply. Calling it with malformed data, e.g., a URL with a "charset" parameter lacking a value, triggers an assertion and aborts the program (denial of service).
Original NVD description (English source)
In Qt before 5.15.15, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.2, there can be an application crash in QXmlStreamReader via a crafted XML string that triggers a situation in which a prefix is greater than a length.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS