Read the docs
TI-2026-80356 Aliases CVE-2026-107157GHSA-mx6g-jjx2-8wfm

Out-of-bounds read in Qt Framework CBOR parsing

Priority LOW 10CWE-125Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
High
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · None · High
Fix status
Partial Red Hat: 1 fixed, 5 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

Qt versions from 5.12.0 through 6.8.8 and from 6.9.0 through 6.11.2 are affected in Qt Core. Specially crafted CBOR input passed to QCborValue::fromCbor() causes an out-of-bounds read (CWE-125), which may crash the application and could expose information. A local attacker without privileges can trigger it if a user processes crafted CBOR input.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00147 3rd percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 5 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
qtQt5.12.0 – 6.8.8; 6.9.0 – 6.11.2—Patch availableCNA
  • Qt Vendorqt Affected 5.12.0 – 6.8.8; 6.9.0 – 6.11.2 Fixed in — Patch available CNA

CPE names CNA · 2

CPEVersionsRoleVendor
cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*——qt
cpe:2.3:a:qt:qtbase:*:*:*:*:*:*:*:*——qt
  • cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:* Versions — — ·qt
  • cpe:2.3:a:qt:qtbase:*:*:*:*:*:*:*:* Versions — — ·qt

Remediation

The sources list no fixed version for Qt. Red Hat Hardened Images are fixed by RHSA-2026:89193. Red Hat lists Red Hat Enterprise Linux 7, 8, 9 and 10 as affected, with no fix plan available.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Red Hat 1 advisory

  • RHSA-2026:89193 Released 2026-10-25 · Red Hat rating Moderate
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images qt6-6.12.0-1.hum1@src, qt6-filesystem-6.12.0-1.hum1@aarch64, qt6-filesystem-6.12.0-1.hum1@s390x +7

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 10AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 7AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux 9AffectedNo fix yet: Fix deferred
Red Hat Hardened ImagesAffectedNo fix yet
Red Hat Hardened ImagesFixed RHSA-2026:89193

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-107157
  2. 2026-10-26 CISA SSVC decision points changed
  3. 2026-10-27 Affected versions changed · Red Hat
  4. 2026-10-27 Alias added: GHSA-mx6g-jjx2-8wfm
  5. 2026-10-29 Fix available: RHSA-2026:89193 · Red Hat
  6. 2026-10-30 Fix available: Red Hat Hardened Images · Red Hat
  7. 2026-10-30 Affected versions changed · Red Hat
  8. 2026-10-30 CVSS score added · Red Hat

References

Patch 1

Advisory 1

  • TI-2024-23902 QAbstractOAuth in Qt Network Authorization in Qt before 5.15.17, 6.x before 6.2.13, 6.3.x… CVSS 3.1CRITICAL 9.8
  • TI-2022-21359 Heap-based buffer overflow in Qt CVSS 3.1HIGH 8.8
  • TI-2022-19524 Integer overflow in Qt CVSS 3.1HIGH 8.8
  • TI-2023-18997 In Qt before 5.15.15, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.2, there can… CVSS 3.1HIGH 7.5
  • TI-2021-09305 Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0… CVSS 3.1MEDIUM 5.5
  • TI-2023-28356 An issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before… CVSS 3.1CRITICAL 9.8
See all 106 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences