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CVE-2026-13326

Out-of-bounds read and integer underflow vulnerability in QNdefNfcTextRecord impacts Qt NFC module

6.9 MediumFix available

An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.

Attack profile

How easy it is to exploit

Attack vector
Adjacent network
Complexity
Low
Privileges needed
None
User interaction
Active

What an attacker can affect

Confidentiality
Low
Integrity
None
Availability
High

Exploit likelihood

0.15%Unchanged since Sep 11, 2026
90%50%10%1%

What each source reports

CVE List Score used 6.9

Out-of-bounds read and integer underflow vulnerability in QNdefNfcTextRecord impacts Qt NFC module

An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.

Record
CVE-2026-13326
CVSS 4.0
6.9 MediumCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Weakness
CWE-125, CWE-191
Updated
2026-11-02
EUVDEUVD-2026-75974 6.9

An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.

Record
EUVD-2026-75974
CVSS 4.0
6.9 MediumCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-83vf-f8f4-pj48 6.9

An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate...

An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.

Record
GHSA-83vf-f8f4-pj48
CVSS 4.0
6.9 MediumCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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:X/U:X
Weakness
CWE-125
Updated
2026-11-02
NVD 6.9

An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.

Record
CVE-2026-13326
CVSS 4.0
6.9 MediumCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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:X/U:X
Weakness
CWE-125, CWE-191
Updated
2026-11-02
OSVDEBIAN-CVE-2026-13326 6.9

An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.

Record
DEBIAN-CVE-2026-13326
CVSS 4.0
6.9 MediumCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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:X/U:X
Updated
2026-11-02
OSVOESA-2026-3918 9.1

qt6-qtconnectivity security update

.

Security Fix(es):

An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.(CVE-2026-13326)

Record
OESA-2026-3918
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated
2026-11-02
OSVOESA-2026-3919 9.1

qt6-qtconnectivity security update

.

Security Fix(es):

An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.(CVE-2026-13326)

Record
OESA-2026-3919
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated
2026-11-02
OSVOESA-2026-4005 9.1

qt6-qtconnectivity security update

.

Security Fix(es):

An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.(CVE-2026-13326)

Record
OESA-2026-4005
CVSS 3.1
9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated
2026-11-02
OSVAZL-101111 No score

CVE-2026-13326 affecting package qt6-qtconnectivity 6.5.7-1

An out-of-bounds read in Qt NFC's language code length parsing allows a physically proximate attacker to cause a denial of service or limited memory disclosure via a crafted NFC tag.

Record
AZL-101111
Updated
2026-11-05

Affected products

Affected packages

Affected packages
PackageAffectedFixed
qt6-qtconnectivity
Azure Linux:3
 through 6.5.7-1 None known
qt6-connectivity
Debian:12
 All versions, plus listed versions
6.10.2-16.10.2-26.10.2-36.11.2-16.11.2-2
Show 29 moreShow less
6.4.2-16.4.2-26.4.2-36.4.2-46.4.2-56.6.0-16.6.0-26.6.0-36.6.1-16.6.1-26.6.2-16.6.2-26.7.2-16.7.2-26.7.2-36.7.2-46.7.2-56.7.2-66.7.2-76.7.2-86.8.2-16.8.2-26.8.2-36.9.1-16.9.1-26.9.2-16.9.2-26.9.2-36.9.2-4
 None known
qt6-connectivity
Debian:13
 All versions, plus listed versions
6.10.2-16.10.2-26.10.2-36.11.2-16.11.2-2
Show 7 moreShow less
6.8.2-36.9.1-16.9.1-26.9.2-16.9.2-26.9.2-36.9.2-4
 None known
qt6-connectivity
Debian:14
 before 6.11.2-2, plus listed versions
6.10.2-16.10.2-26.10.2-36.11.2-16.8.2-3
Show 6 moreShow less
6.9.1-16.9.1-26.9.2-16.9.2-26.9.2-36.9.2-4
6.11.2-2
qtconnectivity-opensource-src
Debian:12
 All versions, plus listed versions
5.15.10-15.15.10-25.15.12-15.15.13-15.15.13-2
Show 10 moreShow less
5.15.15-15.15.15-25.15.15-35.15.17-15.15.17-25.15.18-15.15.19-15.15.19-25.15.8-25.15.9-1
 None known
qtconnectivity-opensource-src
Debian:13
 All versions, plus listed versions
5.15.15-35.15.17-15.15.17-25.15.18-15.15.19-15.15.19-2
 None known
qt6-qtconnectivity
openEuler:24.03-LTS-SP1
 before 6.5.2-4.oe2403sp1
6.5.2-4.oe2403sp1
qt6-qtconnectivity
openEuler:24.03-LTS-SP3
 before 6.5.2-4.oe2403sp3
6.5.2-4.oe2403sp3
qt6-qtconnectivity
openEuler:24.03-LTS-SP4
 before 6.5.2-4.oe2403sp4
6.5.2-4.oe2403sp4

History

History
RecordedChangedSources
factsOSV
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

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

In short

CVE-2026-13326 is a medium vulnerability (CVSS 6.9) in Qt, published September 11, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.15%, the 4th percentile. Fixed in qt6-connectivity 6.11.2-2.

References

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