Improper Validation of Specified Index Affecting qt/qtbase package, versions [,6.9.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published9 Jul 2025
- disclosed2 Jun 2025
- creditUnknown
Introduced: 2 Jun 2025
CVE-2025-5455 (opens in a new tab)How to fix?
Upgrade qt/qtbase to version 6.9.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Validation of Specified Index through qDecodeDataUrl(), which is used in QTextDocument and QNetworkReply. An attacker can cause the application to crash by providing malformed data, triggering an assertion failure, and resulting in an abort.
Note: Successful exploitation requires Qt to be built with assertions enabled.