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Fencer Intel
low 2.0

CVE-2026-107157 json

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

published 14d ago modified 19h ago also EUVD-2026-109801

cvss
2.0
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.1%
EPSS 0.1% chance of exploitation in 30 days, percentile 3%
public exploits
0
none known

Summary

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.

Patch / fix

  • qt6-base Debian 14 6.11.2+dfsg-5

debian advisories DEBIAN-CVE-2026-107157

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-107157 updated cvss 3.6

qt: Out-of-bounds read vulnerability in QCborValue::fromCbor() impacts Qt Framework

  • Red Hat Enterprise Linux 7 qt5-qtbase, qt5-qtbase-gui, qt5-rpm-macros, qt5-qtbase-odbc, qt5-qtbase-mysql, qt5-qtbase-common, +2 more Red Hat Enterprise Linux 8 qt5-qtbase, qt5-qtbase-gui, qt5-qtbase-odbc, qt5-qtbase-mysql, qt5-qtbase-common, qt5-qtbase-examples, +1 more Red Hat Enterprise Linux 9 qt5-qtbase, qt5-qtbase-gui, qt5-qtbase-odbc, qt5-qtbase-mysql, qt5-qtbase-common, qt5-qtbase-examples, +1 more Red Hat Enterprise Linux 10 qt6-qtbase Red Hat Hardened Images qt5-qtbase, qt6-qtbase, qt5 5.15.18-3.1.hum1
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Hardened Images qt6 6.12.0-1.hum1, qt6-filesystem 6.12.0-1.hum1, qt6-rpm-macros 6.12.0-1.hum1, qt6-srpm-macros 6.12.0-1.hum1
    fixed: vendor fix RHSA-2026:89193

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
14d ago

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 4.0 2.0 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
CNA 4.0 2.0 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/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

Affected products

  • qt Qt

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.