Medium 4.3Published Oct 27, 2026

CVE-2026-107472Out-of-bounds read vulnerability in QTextCodec TSCII encoding impacts Qt

Updated under an hour ago (Oct 29, 2026, 11:10 AM ET)

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It affects Qt and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Applications that convert text to the TSCII encoding through QTextCodec may read memory outside the input buffer, which can cause the application to crash or misinterpret the data.

CVSS: 4.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green
Weakness (CWE): CWE-125
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Qt
NVD analysis: Awaiting Analysis
Record last updated: Oct 27, 2026
First seen by InfoSec Signals: Oct 27, 2026

Affected products

Affected products

qt Qt qt:qt	from 4.0.0 through 6.8.8; from 6.9.0 through 6.11.2; before 4.0.0 not affected	CNA record
qt Qt qt:qt5compat	from 4.0.0 through 6.8.8; from 6.9.0 through 6.11.2; before 4.0.0 not affected	CNA record
qt Qt qt:qtbase	from 4.0.0 through 6.8.8; from 6.9.0 through 6.11.2; before 4.0.0 not affected	CNA record

References

References

https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-107472:	vendor-advisory
https://codereview.qt-project.org/c/qt/qt5compat/+/762021	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.