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CVE-2026-107479

Integer truncation vulnerability in QTextCodec conversion functions impacts Qt Framework

1.7 Low

CVE-2026-107479 is a low vulnerability (CVSS 1.7) in Qt, published November 4, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 5th percentile. No source names a fixed version.

What does this mean?
Severity
1.7 LowCVSS 4.0, CVE List
Exploit chance
0.16%EPSS, 5th percentile
Exploitation
None knownNot on CISA’s or ENISA’s lists
Fixed in
No fix listedNo source names one

Description

An integer truncation vulnerability in the QTextCodec conversion functions of the Qt 5 Core Compatibility APIs module impacts the Qt Framework. An application using the affected functionality could crash.

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

0.16%Unchanged since Nov 5, 2026
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
qt6-5compat
Debian:12
All versions, plus listed versions
6.10.2-16.10.2-26.10.2-36.10.2-46.11.2-1
Show 22 moreShow less
6.11.2-26.11.2-36.11.2-46.4.2-16.4.2-26.4.2-36.4.2-46.6.1-16.6.1-26.6.2-16.6.2-26.7.2-16.7.2-26.7.2-36.8.2-16.8.2-26.8.2-36.9.1-16.9.1-26.9.2-16.9.2-26.9.2-3
None known
qt6-5compat
Debian:13
All versions, plus listed versions
6.10.2-16.10.2-26.10.2-36.10.2-46.11.2-1
Show 9 moreShow less
6.11.2-26.11.2-36.11.2-46.8.2-36.9.1-16.9.1-26.9.2-16.9.2-26.9.2-3
None known
qt6-5compat
Debian:14
All versions, plus listed versions
6.10.2-16.10.2-26.10.2-36.10.2-46.11.2-1
Show 9 moreShow less
6.11.2-26.11.2-36.11.2-46.8.2-36.9.1-16.9.1-26.9.2-16.9.2-26.9.2-3
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-65.15.19+dfsg-75.15.8+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-1
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 16 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-65.15.19+dfsg-7
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 15 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-65.15.19+dfsg-7
None known
qt6
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:6.12.0-1.hum1
0:6.12.0-1.hum1
qt6-filesystem
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:6.12.0-1.hum1
0:6.12.0-1.hum1
qt6-rpm-macros
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:6.12.0-1.hum1
0:6.12.0-1.hum1
qt6-srpm-macros
Red Hat:hummingbird:1
From an advisory covering 10 CVEs
before 0:6.12.0-1.hum1
0:6.12.0-1.hum1
Show 11 moreShow less
Affected packages
PackageAffectedFixed
qtbase-opensource-src
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
5.4.2+dfsg-2ubuntu95.5.1+dfsg-6ubuntu45.5.1+dfsg-10ubuntu25.5.1+dfsg-13ubuntu15.5.1+dfsg-13ubuntu2
Show 15 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-16ubuntu65.5.1+dfsg-16ubuntu75.5.1+dfsg-16ubuntu7.15.5.1+dfsg-16ubuntu7.25.5.1+dfsg-16ubuntu7.55.5.1+dfsg-16ubuntu7.65.5.1+dfsg-16ubuntu7.75.5.1+dfsg-16ubuntu7.7+esm15.5.1+dfsg-16ubuntu7.7+esm2
None known
qtbase-opensource-src
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
5.9.1+dfsg-10ubuntu15.9.1+dfsg-10ubuntu25.9.2+dfsg-4ubuntu65.9.3+dfsg-0ubuntu15.9.3+dfsg-0ubuntu3
Show 12 moreShow less
5.9.3+dfsg-0ubuntu45.9.4+dfsg-0ubuntu35.9.4+dfsg-0ubuntu45.9.5+dfsg-0ubuntu15.9.5+dfsg-0ubuntu25.9.5+dfsg-0ubuntu2.15.9.5+dfsg-0ubuntu2.35.9.5+dfsg-0ubuntu2.45.9.5+dfsg-0ubuntu2.55.9.5+dfsg-0ubuntu2.65.9.5+dfsg-0ubuntu2.6+esm15.9.5+dfsg-0ubuntu2.6+esm2
None known
qtbase-opensource-src
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
5.12.4+dfsg-4ubuntu15.12.5+dfsg-25.12.5+dfsg-85.12.5+dfsg-8build15.12.5+dfsg-9build1
Show 6 moreShow less
5.12.8+dfsg-0ubuntu15.12.8+dfsg-0ubuntu2.15.12.8+dfsg-0ubuntu2.1+esm15.12.8+dfsg-0ubuntu2.1+esm25.12.8+dfsg-0ubuntu2.1+esm35.12.8+dfsg-0ubuntu2.1+esm4
None known
qt6-5compat
Ubuntu:22.04:LTS
All versions, plus listed versions
6.2.2-56.2.4-1
None known
qtbase-opensource-src
Ubuntu:Pro:22.04:LTS
All versions, plus listed versions
5.15.2+dfsg-125.15.2+dfsg-135.15.2+dfsg-145.15.2+dfsg-14ubuntu15.15.2+dfsg-14ubuntu3
Show 8 moreShow less
5.15.2+dfsg-155.15.3+dfsg-15.15.3+dfsg-25.15.3+dfsg-2ubuntu0.15.15.3+dfsg-2ubuntu0.25.15.3+dfsg-2ubuntu0.2+esm15.15.3+dfsg-2ubuntu0.2+esm25.15.3+dfsg-2ubuntu0.2+esm3
None known
qt6-5compat
Ubuntu: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
qtbase-opensource-src
Ubuntu:Pro:24.04:LTS
All versions, plus listed versions
5.15.10+dfsg-35.15.10+dfsg-55.15.10+dfsg-5ubuntu15.15.12+dfsg-1ubuntu15.15.12+dfsg-3ubuntu1
Show 4 moreShow less
5.15.12+dfsg-3ubuntu65.15.12+dfsg-3ubuntu75.15.13+dfsg-1ubuntu15.15.13+dfsg-1ubuntu1+esm1
None known
qt6-5compat
Ubuntu:26.10
All versions, plus listed versions
6.10.2-16.10.2-36.10.2-46.11.2-1
None known
qtbase-opensource-src
Ubuntu:26.10
All versions, plus listed versions
5.15.18+dfsg-1ubuntu15.15.19+dfsg-2ubuntu15.15.19+dfsg-2ubuntu2
None known
qt6-5compat
Ubuntu:26.04:LTS
All versions, plus listed versions
6.9.2-16.9.2-36.9.2-3build16.10.2-1
None known
qtbase-opensource-src
Ubuntu:26.04:LTS
All versions, plus listed versions
5.15.17+dfsg-1ubuntu15.15.17+dfsg-1ubuntu25.15.18+dfsg-1ubuntu1
None known

What each source reports

CVE List Score used1.7

Integer truncation vulnerability in QTextCodec conversion functions impacts Qt Framework

An integer truncation vulnerability in the QTextCodec conversion functions of the Qt 5 Core Compatibility APIs module impacts the Qt Framework. An application using the affected functionality could crash.

Record
CVE-2026-107479
CVSS 4.0
1.7 LowCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/RE:L/U:Green
Weakness
CWE-197
Updated
2026-11-09
EUVDEUVD-2026-1168901.7

An integer truncation vulnerability in the QTextCodec conversion functions of the Qt 5 Core Compatibility APIs module impacts the Qt Framework. An application using the affected functionality could crash.

Record
EUVD-2026-116890
CVSS 4.0
1.7 LowCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/RE:L/U:Green
Updated
2026-11-09
GitHub AdvisoriesGHSA-q929-xhmp-hf8w1.7

An integer truncation vulnerability in the QTextCodec conversion functions of the Qt 5 Core...

An integer truncation vulnerability in the QTextCodec conversion functions of the Qt 5 Core Compatibility APIs module impacts the Qt Framework. An application using the affected functionality could crash.

Record
GHSA-q929-xhmp-hf8w
CVSS 4.0
1.7 LowCVSS:4.0/AV:L/AC:L/AT:P/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:X/R:X/V:X/RE:L/U:Green
Weakness
CWE-197
Updated
2026-11-04
NVD1.7

An integer truncation vulnerability in the QTextCodec conversion functions of the Qt 5 Core Compatibility APIs module impacts the Qt Framework. An application using the affected functionality could crash.

Record
CVE-2026-107479
CVSS 4.0
1.7 LowCVSS:4.0/AV:L/AC:L/AT:P/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:X/R:X/V:X/RE:L/U:Green
Weakness
CWE-197
Updated
2026-11-07
OSVDEBIAN-CVE-2026-1074791.7

An integer truncation vulnerability in the QTextCodec conversion functions of the Qt 5 Core Compatibility APIs module impacts the Qt Framework. An application using the affected functionality could crash.

Record
DEBIAN-CVE-2026-107479
CVSS 4.0
1.7 LowCVSS:4.0/AV:L/AC:L/AT:P/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:X/R:X/V:X/RE:L/U:Green
Updated
2026-11-10
OSVRHSA-2026:891938.2

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Record
RHSA-2026:89193
CVSS 3.1
8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Updated
2026-11-13
OSVUBUNTU-CVE-2026-1074791.7

An integer truncation vulnerability in the QTextCodec conversion functions of the Qt 5 Core Compatibility APIs module impacts the Qt Framework. An application using the affected functionality could crash.

Record
UBUNTU-CVE-2026-107479
CVSS 4.0
1.7 LowCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/RE:L/U:Green
Updated
2026-11-06

History

History
RecordedChangedSources
affected, aliases, referencesOSV
affectedCVE List, EUVD, OSV
affected, aliases, referencesNVD, OSV
affected, aliases, referencesOSV
publishedEUVD
publishedEUVD, NVD
aliases, referencesGitHub Advisories
cwes, products, references, severity, titleCVE List
first indexedEUVD

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

References

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