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TI-2026-67562 Aliases CVE-2026-19395GHSA-4vr6-gg46-c2vh

Empty img attribute in Qt for MCUs styled text halts the device

Priority LOW 35CWE-230Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-617.

Summary

In Qt for MCUs from 2.12.0 before 2.12.3, a Text element that displays styled text halts the device if an img tag contains an attribute with an empty value. The text parser passes that empty value to an internal check that only accepts non-empty values, and the failed check triggers the default error handler, which halts the device. A remote attacker without privileges and without user interaction can halt the device, which is classified as CWE-617 Reachable Assertion.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

In Qt for MCUs, a Text element that displays styled text halts the device if an <img> tag in the text contains an attribute with an empty value. The text parser passes the empty value to an internal check that only accepts non-empty values. The check fails and reports an error, and the default error handler halts the device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00253 16th percentileScored 2026-11-07
Fix Fixed Qt for MCUs (qt): 2.12.3Red Hat: 2 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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
qtQt for MCUs2.12.0 to before 2.12.32.12.3Patch availableCNA
  • Qt for MCUs Vendorqt Affected 2.12.0 to before 2.12.3 Fixed in 2.12.3 Patch available CNA

Remediation

Update Qt for MCUs to version 2.12.3. Red Hat fixes this in Red Hat Hardened Images through RHSA-2026:41387 and RHSA-2026:57634.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · CNA Qt for MCUs (qt) Fixed in 2.12.3

Red Hat 2 advisories

  • RHSA-2026:57634 Released 2026-08-20 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images qt6-6.11.2-1.hum1@src, qt6-filesystem-6.11.2-1.hum1@aarch64, qt6-filesystem-6.11.2-1.hum1@x86_64 +4
  • RHSA-2026:41387 Released 2026-07-18 · Red Hat rating Important
    Red Hat Hardened Images RPMs bug fix and enhancement update
    • Red Hat Hardened Images qt5-5.15.18-3.hum1@src, qt5-filesystem-5.15.18-3.hum1@aarch64, qt5-filesystem-5.15.18-3.hum1@x86_64 +4

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Hardened ImagesFixed RHSA-2026:41387, RHSA-2026:57634
Not affected: 5 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-05 Threatist record created from CVE-2026-19395
  2. 2026-10-05 Alias added: GHSA-4vr6-gg46-c2vh
  3. 2026-10-06 Fix available: RHSA-2026:41387 · Red Hat
  4. 2026-10-06 Fix available: RHSA-2026:57634 · Red Hat
  5. 2026-10-06 Fix available: Red Hat Hardened Images · Red Hat
  6. 2026-10-06 CVSS score added · Red Hat
  7. 2026-10-16 Affected versions changed · Red Hat

References

Other 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