TI-2026-80344 Aliases CVE-2026-96432 GHSA-8hqc-789f-9chh

Null pointer dereference in Qt QNetworkAccessManager crashes apps

LOW 11CWE-476Published 2026-10-26 · Updated 2026-10-26

Key facts

Attack vector: Network
Privileges required: None
User interaction: Active
Attack complexity: Low
Attack requirements: Present
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

Qt versions 6.8.0 through 6.8.9 and 6.9.0 through 6.11.2 are affected in the Qt Network module. A malicious or compromised HTTP/2 server can trigger a NULL pointer dereference (CWE-476) in the QNetworkAccessManager class, crashing the application. The attacker needs no privileges, only control of the server the application connects to. The sources do not report known exploitation.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00329 26th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
qt	qt	6.8.0 – 6.8.9; 6.9.0 – 6.11.2	—	No fix listed	CNA

qt Vendorqt Affected 6.8.0 – 6.8.9; 6.9.0 – 6.11.2 Fixed in — No fix listed CNA

CPE names CNA · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:qt:qt::::::::	—	—	qt
cpe:2.3:a:qt:qtbase::::::::	—	—	qt

cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:* Versions — — ·qt
cpe:2.3:a:qt:qtbase:*:*:*:*:*:*:*:* Versions — — ·qt

Remediation

The sources list no fixed version for qt. Red Hat rates the flaw Moderate, lists no fix planned for Red Hat Enterprise Linux 6, and lists none available for Red Hat Enterprise Linux 7, 8, 9, 10 and Red Hat Hardened Images.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 10	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 6	Affected	No fix planned: Out of support scope
Red Hat Enterprise Linux 7	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 8	Affected	No fix yet: Fix deferred
Red Hat Enterprise Linux 9	Affected	No fix yet: Fix deferred
Red Hat Hardened Images	Affected	No fix yet

Timeline

2026-10-26 Threatist record created from CVE-2026-96432
2026-10-26 CISA SSVC decision points changed
2026-10-27 Alias added: GHSA-8hqc-789f-9chh
2026-11-06 Affected versions changed · Red Hat
2026-11-06 CVSS score added · Red Hat

References

Patch 1

https://codereview.qt-project.org/c/qt/qtbase/+/759718

Advisory 1

https://wiki.qt.io/List_of_known_vulnerabilities_in_Qt_products#CVE-2026-96432:

TI-2024-23902 QAbstractOAuth in Qt Network Authorization in Qt before 5.15.17, 6.x before 6.2.13, 6.3.x… CVSS 3.1CRITICAL 9.8
TI-2022-21359 Heap-based buffer overflow in Qt CVSS 3.1HIGH 8.8
TI-2022-19524 Integer overflow in Qt CVSS 3.1HIGH 8.8
TI-2023-18997 In Qt before 5.15.15, 6.x before 6.2.9, and 6.3.x through 6.5.x before 6.5.2, there can… CVSS 3.1HIGH 7.5
TI-2021-09305 Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0… CVSS 3.1MEDIUM 5.5
TI-2023-28356 An issue was discovered in the HTTP2 implementation in Qt before 5.15.17, 6.x before… CVSS 3.1CRITICAL 9.8

See all 106 →

Sources

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