CVE-2026-9499

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.52% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 42.0% of scored records. A rank, not a probability.

NVD base score

6.3 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/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

NVD analysis status

Deferred. NVD last modified this record on 2026-07-23.

Red Hat severity

Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-07-21 13:25Z1 MO AGO

Last updated

2026-07-22 18:28Z1 MO AGO

Reserved

2026-05-25

Assigning CNA

TQtC

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

8eed206862825749ed7b842945878b79f044973e65124a9d3f8c2c2b108d4994

• codereview.qt-project.orgFix (dev, released in Qt 6.12.0)https://codereview.qt-project.org/c/qt/qt5compat/+/723911patch
• codereview.qt-project.orgFix (6.11 branch, released in Qt 6.11.1)https://codereview.qt-project.org/c/qt/qt5compat/+/724348patch
• codereview.qt-project.orgFix (6.10 branch)https://codereview.qt-project.org/c/qt/qt5compat/+/724995patch
• codereview.qt-project.orgFix (6.8 LTS branch, released in Qt 6.8.8)https://codereview.qt-project.org/c/qt/tqtc-qt5compat/+/725112patch