CVE-2025-5683: qt DoS — Fix

Description

When loading a specifically crafted ICNS format image file in QImage then it will trigger a crash. This issue affects Qt from versions 6.3.0 through 6.5.9, from 6.6.0 through 6.8.4, 6.9.0. This is fixed in 6.5.10, 6.8.5 and 6.9.1.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-770 CWE-770

Affected Products

Vendor	Product	Versions
qt	qt	6.3.0 — 6.5.10
qt	qt	6.6.0 — 6.8.5
qt	qt	6.9.0 — 6.9.1

References

Advisories & Patches

https://codereview.qt-project.org/c/qt/qtimageformats/+/644548 https://issues.oss-fuzz.com/issues/415350704

Frequently Asked Questions

What is CVE-2025-5683? +

When loading a specifically crafted ICNS format image file in QImage then it will trigger a crash. This issue affects Qt from versions 6.3.0 through 6.5.9, from 6.6.0 through 6.8.4, 6.9.0. This is fixed in 6.5.10, 6.8.5 and 6.9.1. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-5683? +

CVE-2025-5683 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-5683? +

CVE-2025-5683 affects products from qt, specifically: qt. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-5683? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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