CVE-2026-107590

Out-of-bounds write vulnerability in QTextCodec iconv-based encoding impacts Qt

State: Published
Severity: 1.9 Low
Published: Oct 27, 2026
Updated: Oct 27, 2026
Reserved: Oct 8, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	1.9 Low	CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green	Qt

Weaknesses

CWE-787 Out-of-bounds Write
CWE-131 Incorrect Calculation of Buffer Size

Affected Products

Product	Versions
Qtqt	before 4.5.0Not affected 4.5.0 through 6.8.8Affected 6.9.0 through 6.11.2Affected

References

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