All vulnerabilities
CVE-2026-107590

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

qt Qt
Open in ThreatlineRecord JSON
CVSS
1.9Low
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published27 Oct 2026Updated 27 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

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.

Text from CVE List

Affected versions 3

  • Qtunaffected: all versions before 4.5.0CVE List
  • Qtaffected: 4.5.0 through 6.8.8CVE List
  • Qtaffected: 6.9.0 through 6.11.2CVE List

References 2