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

Assessment

CVSS

2 (v4.0)

Severity

Low

Known exploited

Not listed in CISA KEV

Exploit availability

Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories

Published

26 October 2026

Last updated

27 October 2026

Weakness

CWE-125

Assigner

a59d8014-47c4-4630-ab43-e1b13cbe58e3

CVSS vectorCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:L/U:Amber

At the source

• NVD

References

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

Query this programmatically

Agents can read this through the MCP endpoint, or over HTTP:

curl https://cve.zerocrew.in/api/cve/CVE-2026-107157