VULNERABILITY INTELLIGENCE
CVE-2025-5455
EPSS probability0.40%
CISA KEVNot currently listed
Published2025-06-02
Last modified2026-07-29
Description
An issue was found in the private API function qDecodeDataUrl() in QtCore, which is used in QTextDocument and QNetworkReply, and, potentially, in user code. If the function was called with malformed data, for example, an URL that contained a "charset" parameter that lacked a value (such as "data:charset,"), and Qt was built with assertions enabled, then it would hit an assertion, resulting in a denial of service (abort). This impacts Qt up to 5.15.18, 6.0.0->6.5.8, 6.6.0->6.8.3 and 6.9.0. This has been fixed in 5.15.19, 6.5.9, 6.8.4 and 6.9.1.
Weakness classification
- a59d8014-47c4-4630-ab43-e1b13cbe58e3: CWE-20