Vulnerability · Published Oct 26, 2026 · Assigned by Qt
CVE-2026-96432Null pointer dereference vulnerability in QNetworkAccessManager impacts Qt
Low 2.1
In plain English
A low-severity null pointer dereference in qt from qt. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Severity (CVSS 4.0)2.1Low
Exploit odds (30 days)0.3%top 73.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | qt6-base | no fix listed | DEBIAN-CVE-2026-96432 |
| Debian:13 | qt6-base | no fix listed | DEBIAN-CVE-2026-96432 |
| Debian:14 | qt6-base | no fix listed | DEBIAN-CVE-2026-96432 |
| Ubuntu:22.04:LTS | qt6-base | no fix listed | UBUNTU-CVE-2026-96432 |
| Ubuntu:24.04:LTS | qt6-base | no fix listed | UBUNTU-CVE-2026-96432 |
| Ubuntu:26.04:LTS | qt6-base | no fix listed | UBUNTU-CVE-2026-96432 |
| Ubuntu:26.10 | qt6-base | no fix listed | UBUNTU-CVE-2026-96432 |
Affected products (as reported)
Weakness: CWE-476 · Vector: 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