Resource exhaustion in Qt

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (13.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-5683: held from 0.002 to 0.002.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

  • Qt — versions 6.9.1, 6.3.0, 6.5.10
  • The Qt Company — versions 0, 6.3.0, 6.5.10

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-5683?
CVE-2025-5683 is a medium-severity vulnerability in Qt, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.5/10. Published 2025-06-05.
How severe is CVE-2025-5683?
Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2025-5683 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.