Low 2.0Published Oct 26, 2026

CVE-2026-107157Out-of-bounds read vulnerability in QCborValue::fromCbor() impacts Qt Framework

Updated under an hour ago (Oct 29, 2026, 8:40 PM ET)

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It affects Qt and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Specially crafted CBOR input passed to QCborValue::fromCbor() in Qt Core can cause an out-of-bounds read, which may crash the application and could expose information.

CVSS: 2.0 LOW (v4.0, CNA)CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/RE:L/U:Amber
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 26, 2026

Affected products

Affected products

qt Qt qt:qt	before 5.12.0 not affected; from 5.12.0 through 6.8.8; from 6.9.0 through 6.11.2	CNA record
qt Qt qt:qtbase	before 5.12.0 not affected; from 5.12.0 through 6.8.8; from 6.9.0 through 6.11.2	CNA record

References

References

https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-107157:	vendor-advisory
https://codereview.qt-project.org/c/qt/qtbase/+/745719	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.