CVE-2026-105923

Null-pointer dereference in QTriangulator reachable through VectorImage

4.0 Medium

A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference in VectorImage QML Type.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Active

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.12%Down 0.1 points since Oct 21, 2026

What each source reports

CVE List Score used 4.0

Null-pointer dereference in QTriangulator reachable through VectorImage

A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference in VectorImage QML Type.

Record: CVE-2026-105923
CVSS 4.0: 4.0 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/RE:L/U:Green
Weakness: CWE-476, CWE-190
Updated: 2026-11-02

EUVDEUVD-2026-107159 4.0

A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference in VectorImage QML Type.

Record: EUVD-2026-107159
CVSS 4.0: 4.0 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/RE:L/U:Green
Updated: 2026-11-02

GitHub AdvisoriesGHSA-fqj5-mj9g-cmjj 4.0

A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference...

A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference in VectorImage QML Type.

Record: GHSA-fqj5-mj9g-cmjj
CVSS 4.0: 4.0 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/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:N/R:U/V:X/RE:L/U:Green
Weakness: CWE-190
Updated: 2026-11-02

NVD 4.0

A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference in VectorImage QML Type.

Record: CVE-2026-105923
CVSS 4.0: 4.0 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/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:N/R:U/V:X/RE:L/U:Green
Weakness: CWE-190, CWE-476
Updated: 2026-11-02

OSVDEBIAN-CVE-2026-105923 4.0

A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference in VectorImage QML Type.

Record: DEBIAN-CVE-2026-105923
CVSS 4.0: 4.0 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/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:N/R:U/V:X/RE:L/U:Green
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-105923 4.0

A malicious SVG can trigger an integer overflow which in turn triggers a null-pointer dereference in VectorImage QML Type.

Record: UBUNTU-CVE-2026-105923
CVSS 4.0: 4.0 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/AU:N/R:U/RE:L/U:Green
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`qt6-base` Debian:12	All versions, plus listed versions 6.10.2+dfsg-16.10.2+dfsg-106.10.2+dfsg-10+hurd.16.10.2+dfsg-116.10.2+dfsg-12 Show 45 moreShow less 6.10.2+dfsg-136.10.2+dfsg-146.10.2+dfsg-156.10.2+dfsg-166.10.2+dfsg-26.10.2+dfsg-36.10.2+dfsg-46.10.2+dfsg-56.10.2+dfsg-66.10.2+dfsg-76.10.2+dfsg-7+hurd.16.10.2+dfsg-86.10.2+dfsg-96.11.2+dfsg-16.11.2+dfsg-26.11.2+dfsg-36.11.2+dfsg-46.11.2+dfsg-56.11.2+dfsg-5+sparc646.11.2+dfsg-66.11.2+dfsg-76.4.2+dfsg-106.4.2+dfsg-116.4.2+dfsg-11~bpo11+16.4.2+dfsg-126.4.2+dfsg-136.4.2+dfsg-146.4.2+dfsg-156.4.2+dfsg-166.4.2+dfsg-176.4.2+dfsg-186.4.2+dfsg-18+loong646.4.2+dfsg-196.4.2+dfsg-206.4.2+dfsg-216.4.2+dfsg-21.16.6.0+dfsg-16.6.0+dfsg-26.6.0+dfsg-36.6.0+dfsg-46.6.0+dfsg-56.6.0+dfsg-66.6.1+dfsg-16.6.1+dfsg-26.6.1+dfsg-3	None known
`qt6-base` Debian:13	All versions, plus listed versions 6.10.2+dfsg-16.10.2+dfsg-106.10.2+dfsg-10+hurd.16.10.2+dfsg-116.10.2+dfsg-12 Show 35 moreShow less 6.10.2+dfsg-136.10.2+dfsg-146.10.2+dfsg-156.10.2+dfsg-166.10.2+dfsg-26.10.2+dfsg-36.10.2+dfsg-46.10.2+dfsg-56.10.2+dfsg-66.10.2+dfsg-76.10.2+dfsg-7+hurd.16.10.2+dfsg-86.10.2+dfsg-96.11.2+dfsg-16.11.2+dfsg-26.11.2+dfsg-36.11.2+dfsg-46.11.2+dfsg-56.11.2+dfsg-5+sparc646.11.2+dfsg-66.11.2+dfsg-76.8.2+dfsg-106.8.2+dfsg-10.16.8.2+dfsg-96.8.2+dfsg-9+deb13u16.8.2+dfsg-9+deb13u26.9.1+dfsg-16.9.1+dfsg-26.9.1+dfsg-36.9.1+dfsg-46.9.1+dfsg-56.9.2+dfsg-16.9.2+dfsg-26.9.2+dfsg-36.9.2+dfsg-4	None known
`qt6-base` Debian:14	All versions, plus listed versions 6.10.2+dfsg-16.10.2+dfsg-106.10.2+dfsg-10+hurd.16.10.2+dfsg-116.10.2+dfsg-12 Show 33 moreShow less 6.10.2+dfsg-136.10.2+dfsg-146.10.2+dfsg-156.10.2+dfsg-166.10.2+dfsg-26.10.2+dfsg-36.10.2+dfsg-46.10.2+dfsg-56.10.2+dfsg-66.10.2+dfsg-76.10.2+dfsg-7+hurd.16.10.2+dfsg-86.10.2+dfsg-96.11.2+dfsg-16.11.2+dfsg-26.11.2+dfsg-36.11.2+dfsg-46.11.2+dfsg-56.11.2+dfsg-5+sparc646.11.2+dfsg-66.11.2+dfsg-76.8.2+dfsg-106.8.2+dfsg-10.16.8.2+dfsg-96.9.1+dfsg-16.9.1+dfsg-26.9.1+dfsg-36.9.1+dfsg-46.9.1+dfsg-56.9.2+dfsg-16.9.2+dfsg-26.9.2+dfsg-36.9.2+dfsg-4	None known
`qtbase-opensource-src` Debian:12	All versions, plus listed versions 5.15.10+dfsg-15.15.10+dfsg-25.15.10+dfsg-35.15.10+dfsg-45.15.10+dfsg-5 Show 45 moreShow less 5.15.10+dfsg-65.15.10+dfsg-75.15.10+dfsg-7.15.15.10+dfsg-7.25.15.11+dfsg-15.15.12+dfsg-15.15.12+dfsg-25.15.12+dfsg-35.15.13+dfsg-15.15.13+dfsg-25.15.13+dfsg-35.15.13+dfsg-45.15.14+dfsg-15.15.15+dfsg-15.15.15+dfsg-25.15.15+dfsg-35.15.15+dfsg-45.15.15+dfsg-55.15.15+dfsg-65.15.16+dfsg-15.15.16+dfsg-25.15.17+dfsg-15.15.17+dfsg-25.15.17+dfsg-35.15.17+dfsg-45.15.17+dfsg-55.15.17+dfsg-65.15.17+dfsg-75.15.17+dfsg-85.15.18+dfsg-15.15.18+dfsg-25.15.19+dfsg-15.15.19+dfsg-25.15.19+dfsg-35.15.19+dfsg-45.15.19+dfsg-55.15.19+dfsg-65.15.8+dfsg-115.15.8+dfsg-11+deb12u15.15.8+dfsg-11+deb12u25.15.8+dfsg-11+deb12u35.15.8+dfsg-125.15.8+dfsg-135.15.9+dfsg-15.15.9+dfsg-2	None known
`qtbase-opensource-src` Debian:13	All versions, plus listed versions 5.15.15+dfsg-65.15.15+dfsg-6+deb13u15.15.16+dfsg-15.15.16+dfsg-25.15.17+dfsg-1 Show 15 moreShow less 5.15.17+dfsg-25.15.17+dfsg-35.15.17+dfsg-45.15.17+dfsg-55.15.17+dfsg-65.15.17+dfsg-75.15.17+dfsg-85.15.18+dfsg-15.15.18+dfsg-25.15.19+dfsg-15.15.19+dfsg-25.15.19+dfsg-35.15.19+dfsg-45.15.19+dfsg-55.15.19+dfsg-6	None known
`qtbase-opensource-src` Debian:14	All versions, plus listed versions 5.15.15+dfsg-65.15.16+dfsg-15.15.16+dfsg-25.15.17+dfsg-15.15.17+dfsg-2 Show 14 moreShow less 5.15.17+dfsg-35.15.17+dfsg-45.15.17+dfsg-55.15.17+dfsg-65.15.17+dfsg-75.15.17+dfsg-85.15.18+dfsg-15.15.18+dfsg-25.15.19+dfsg-15.15.19+dfsg-25.15.19+dfsg-35.15.19+dfsg-45.15.19+dfsg-55.15.19+dfsg-6	None known
`qtbase-opensource-src-gles` Debian:12	All versions, plus listed versions 5.15.10+dfsg-15.15.10+dfsg-25.15.10+dfsg-35.15.10+dfsg-45.15.10+dfsg-5 Show 13 moreShow less 5.15.10+dfsg-65.15.12+dfsg-15.15.13+dfsg-15.15.13+dfsg-25.15.15+dfsg-15.15.15+dfsg-25.15.17+dfsg-15.15.17+dfsg-25.15.18+dfsg-15.15.19+dfsg-15.15.19+dfsg-25.15.8+dfsg-35.15.9+dfsg-1	None known
`qtbase-opensource-src-gles` Debian:13	All versions, plus listed versions 5.15.15+dfsg-25.15.17+dfsg-15.15.17+dfsg-25.15.18+dfsg-15.15.19+dfsg-15.15.19+dfsg-2	None known
`qtbase-opensource-src-gles` Debian:14	All versions, plus listed versions 5.15.15+dfsg-25.15.17+dfsg-15.15.17+dfsg-25.15.18+dfsg-15.15.19+dfsg-15.15.19+dfsg-2	None known
`qtbase-opensource-src-gles` Ubuntu:16.04:LTS	All versions, plus listed versions 5.4.2+dfsg-2ubuntu95.5.1+dfsg-6ubuntu15.5.1+dfsg-10ubuntu15.5.1+dfsg-13ubuntu15.5.1+dfsg-13ubuntu2 Show 9 moreShow less 5.5.1+dfsg-13ubuntu35.5.1+dfsg-14ubuntu15.5.1+dfsg-14ubuntu25.5.1+dfsg-14ubuntu35.5.1+dfsg-15ubuntu15.5.1+dfsg-16ubuntu15.5.1+dfsg-16ubuntu45.5.1+dfsg-16ubuntu55.5.1+dfsg-16ubuntu6	None known

Show 5 moreShow less

Affected packages
Package	Affected	Fixed
`qtbase-opensource-src-gles` Ubuntu:20.04:LTS	All versions, plus listed versions 5.12.4+dfsg-1build15.12.5+dfsg-15.12.5+dfsg-25.12.8+dfsg-0ubuntu1	None known
`qtbase-opensource-src-gles` Ubuntu:22.04:LTS	All versions, plus listed versions 5.15.2+dfsg-45.15.2+dfsg-55.15.3+dfsg-1	None known
`qtbase-opensource-src-gles` Ubuntu:24.04:LTS	All versions, plus listed versions 5.15.10+dfsg-25.15.10+dfsg-35.15.12+dfsg-15.15.12+dfsg-1ubuntu15.15.12+dfsg-1ubuntu25.15.13+dfsg-1	None known
`qtbase-opensource-src-gles` Ubuntu:26.10	All versions, plus listed versions 5.15.18+dfsg-15.15.19+dfsg-2	None known
`qtbase-opensource-src-gles` Ubuntu:26.04:LTS	All versions, plus listed versions 5.15.17+dfsg-15.15.17+dfsg-25.15.18+dfsg-1	None known

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-105923 is a medium vulnerability (CVSS 4.0) in Qt, published October 21, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. No source names a fixed version.

References

Show 6 moreShow less

This page doesn't list everything

Left out here: 44 versions. The JSON record has them.