Vulnerability in Qt

CVE-2025-30348

encodeText in QDom in Qt before 6.8.0 has a complex algorithm involving XML string copy and inline replacement of parts of a string (with relocation of later data).

Published · last modified .

CVSS v3 metric

CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.004 (27.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.4% 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-2025-30348: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

  • Qt — versions 0, 6.0.0, 6.6.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-30348?
CVE-2025-30348 is a medium-severity vulnerability in Qt, classified under Inefficient Algorithmic Complexity. CVSS score: 5.8/10. Published 2025-03-21.
How severe is CVE-2025-30348?
Medium severity. CVSS v3 base score is 5.8 out of 10.