Vulnerability DatabaseCVE-2026-107590
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CVE-2026-107590
Published:October 27, 2026
Updated:November 04, 2026
An out-of-bounds write vulnerability in the Qt QTextCodec iconv-based encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Under certain conditions, encoding text with QTextCodec may write outside an internal buffer. This can cause the application to crash and may affect data integrity.
Affected Packages
https://github.com/qt/qt5compat.git (GITHUB):
Affected version(s) >=v6.11.0-beta1 <v6.11.3
Fix Suggestion:
Update to version v6.11.3
Related Resources (3)
https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-107590:
https://codereview.qt-project.org/c/qt/qt5compat/+/762752
https://nvd.nist.gov/vuln/detail/CVE-2026-107590
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CVSS v4
Base Score:
1.9
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
UNREPORTED
CVSS v3
Base Score:
6.1
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
HIGH
Weakness Type (CWE)
Incorrect Calculation of Buffer Size
CWE-131
Out-of-bounds Write
CWE-787
EPSS
Base Score:
0.12