CVE-2026-107472
Out-of-bounds read vulnerability in QTextCodec TSCII encoding impacts Qt
An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Applications that convert text to the TSCII encoding through QTextCodec may read memory outside the input buffer, which can cause the application to crash or misinterpret the data.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Out-of-bounds read vulnerability in QTextCodec TSCII encoding impacts Qt
An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Applications that convert text to the TSCII encoding through QTextCodec may read memory outside the input buffer, which can cause the application to crash or misinterpret the data.
- Record
CVE-2026-107472- CVSS 4.0
- 4.3 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green - Weakness
- CWE-125
- Updated
- 2026-11-04
EUVDEUVD-2026-110622
An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Applications that convert text to the TSCII encoding through QTextCodec may read memory outside the input buffer, which can cause the application to crash or misinterpret the data.
- Record
EUVD-2026-110622- CVSS 4.0
- 4.3 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green - Updated
- 2026-11-04
GitHub AdvisoriesGHSA-v47w-qwhq-fc6f
An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility...
An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Applications that convert text to the TSCII encoding through QTextCodec may read memory outside the input buffer, which can cause the application to crash or misinterpret the data.
- Record
GHSA-v47w-qwhq-fc6f- CVSS 4.0
- 4.3 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/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:X/R:U/V:X/RE:L/U:Green - Weakness
- CWE-125
- Updated
- 2026-11-02
NVD
An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Applications that convert text to the TSCII encoding through QTextCodec may read memory outside the input buffer, which can cause the application to crash or misinterpret the data.
- Record
CVE-2026-107472- CVSS 4.0
- 4.3 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/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:X/R:U/V:X/RE:L/U:Green - Weakness
- CWE-125
- Updated
- 2026-11-04
OSVDEBIAN-CVE-2026-107472
An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Applications that convert text to the TSCII encoding through QTextCodec may read memory outside the input buffer, which can cause the application to crash or misinterpret the data.
- Record
DEBIAN-CVE-2026-107472- CVSS 4.0
- 4.3 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/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:X/R:U/V:X/RE:L/U:Green - Updated
- 2026-11-07
OSVOESA-2026-4670
qt6-qt5compat security update
.
Security Fix(es):
An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Applications that convert text to the TSCII encoding through QTextCodec may read memory outside the input buffer, which can cause the application to crash or misinterpret the data.(CVE-2026-107472)
- Record
OESA-2026-4670- CVSS 4.0
- 4.3 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green - Updated
- 2026-11-04
OSVOESA-2026-4671
qt6-qt5compat security update
.
Security Fix(es):
An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Applications that convert text to the TSCII encoding through QTextCodec may read memory outside the input buffer, which can cause the application to crash or misinterpret the data.(CVE-2026-107472)
- Record
OESA-2026-4671- CVSS 4.0
- 4.3 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green - Updated
- 2026-11-04
OSVUBUNTU-CVE-2026-107472
An out-of-bounds read vulnerability in the QTextCodec TSCII encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Applications that convert text to the TSCII encoding through QTextCodec may read memory outside the input buffer, which can cause the application to crash or misinterpret the data.
- Record
UBUNTU-CVE-2026-107472- CVSS 4.0
- 4.3 Medium
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green - Updated
- 2026-11-05
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
qt6-5compatDebian:12 |
All versions, plus listed versions 6.10.2-16.10.2-26.10.2-36.10.2-46.11.2-1 Show 21 moreShow less6.11.2-26.11.2-36.4.2-16.4.2-26.4.2-36.4.2-46.6.1-16.6.1-26.6.2-16.6.2-26.7.2-16.7.2-26.7.2-36.8.2-16.8.2-26.8.2-36.9.1-16.9.1-26.9.2-16.9.2-26.9.2-3 |
None known |
qt6-5compatDebian:13 |
All versions, plus listed versions 6.10.2-16.10.2-26.10.2-36.10.2-46.11.2-1 Show 8 moreShow less6.11.2-26.11.2-36.8.2-36.9.1-16.9.1-26.9.2-16.9.2-26.9.2-3 |
None known |
qt6-5compatDebian:14 |
All versions, plus listed versions 6.10.2-16.10.2-26.10.2-36.10.2-46.11.2-1 Show 8 moreShow less6.11.2-26.11.2-36.8.2-36.9.1-16.9.1-26.9.2-16.9.2-26.9.2-3 |
None known |
qtbase-opensource-srcDebian: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 less5.15.10+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-srcDebian: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 less5.15.17+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-srcDebian: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 less5.15.17+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 |
qt6-qt5compatopenEuler:24.03-LTS-SP1 |
before 6.5.2-4.oe2403sp1 | 6.5.2-4.oe2403sp1 |
qt6-qt5compatopenEuler:24.03-LTS-SP3 |
before 6.5.2-4.oe2403sp3 | 6.5.2-4.oe2403sp3 |
qt6-5compatUbuntu:22.04:LTS |
All versions, plus listed versions 6.2.2-56.2.4-1 |
None known |
qt6-5compatUbuntu:24.04:LTS |
All versions, plus listed versions 6.4.2-36.4.2-46.4.2-4build16.4.2-4build26.4.2-4build3 |
None known |
qt6-5compatUbuntu:26.10 |
All versions, plus listed versions 6.10.2-16.10.2-36.10.2-46.11.2-1 |
None known |
qt6-5compatUbuntu:26.04:LTS |
All versions, plus listed versions 6.9.2-16.9.2-36.9.2-3build16.10.2-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | CVE List, EUVD, NVD, OSV | |
| affected, aliases, facts, references | OSV | |
| affected, aliases, facts, references | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-107472 is a medium vulnerability (CVSS 4.3) in Qt, published October 27, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.12%, the 1st percentile. Fixed in qt6-qt5compat 6.5.2-4.oe2403sp1.
References
wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products
codereview.qt-project.org/c/qt/qt5compat/+/762021
nvd.nist.gov/vuln/detail/CVE-2026-107472
github.com/advisories/GHSA-v47w-qwhq-fc6f
security-tracker.debian.org/tracker/CVE-2026-107472
openeuler.org/zh/security/security-bulletins/detail?id=openEuler-SA-2026-4670
ubuntu.com/security/CVE-2026-107472
cve.org/CVERecord?id=CVE-2026-107472
Left out here: 1 version. The JSON record has them.