What’s Vulnerable › Vulnerabilities

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

• Severity: low (CVSS 2.0 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-26 · updated 2026-10-27
• Weakness: CWE-125

Description

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.

Affected products

• Qt: from 5.12.0 through 6.8.8; from 6.9.0 through 6.11.2

References

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

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