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Fencer Vulns
low 2.1

CVE-2026-96432 json

Null pointer dereference vulnerability in QNetworkAccessManager impacts Qt

published 2026-10-26 14 d ago modified 2026-10-26 13 d ago also EUVD-2026-109779

cvss
2.1
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 26%
public exploits
0
none known

Summary

A malicious or compromised HTTP/2 server withholding SETTINGS ACK can send RST_STREAM on a completed stream, planting a null pointer, and then send a PUSH_PROMISE for that stream, causing a null pointer dereference in the QNetworkAccessManager class of the Qt Network module that crashes the application.

Patch / fix

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-96432 updated cvss 6.5

qt: qt: Denial of Service via null pointer dereference in HTTP/2 stream handling

  • Red Hat Enterprise Linux 6 qt, qt-x11, qt-odbc, qt-demos, qt-mysql, qt3-ODBC, +10 more
    affected: workaround, no fix planned “Upgrade to Qt 6.8.10 or 6.11.3 (or later), where the fix is available. Applications connecting to untrusted HTTP/2 servers have no code-level workaround in earlier affected versions.”
  • Red Hat Enterprise Linux 7 qt, qt-x11, qt-odbc, qt-qvfb, qt-demos, qt-mysql, +12 more Red Hat Enterprise Linux 8 qt5, qt5-rpm-macros, qt5-srpm-macros Red Hat Enterprise Linux 9 qt5, qt5-rpm-macros, qt5-srpm-macros Red Hat Enterprise Linux 10 qt6 6.10.1-1.el10 Red Hat Hardened Images qt5, qt6 6.10.1-1.el10
    affected: workaround, no fix available “Upgrade to Qt 6.8.10 or 6.11.3 (or later), where the fix is available. Applications connecting to untrusted HTTP/2 servers have no code-level workaround in earlier affected versions.”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
14 d ago

Exploit prediction

0.33% chance of exploitation in the next 30 days, higher than 26% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 2.1 CVSS:4.0/AV:N/AC:L/AT:P/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
CNA 4.0 2.1 CVSS:4.0/AV:N/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:N/R:U/V:X/RE:L/U:Green

Affected products

  • qt qt

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.