5.8

CVE-2025-30348: qt Inefficient Algorithmic Complexity

CVSS: 5.8v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2025-30348DEBIAN-CVE-2025-30348
Published 21-03-2025Last modified 21-03-2025
Open JSON

Vulnerability summary

CVE-2025-30348 is a medium (CVSS 5.8) Inefficient Algorithmic Complexity vulnerability in qt. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.2% of scored vulnerabilities.

Overall risk
23/100
0100
Low · default modelHow is this calculated?
CVSS score
5.8/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.37%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 2
SUSE-SU-2025:03599-1SUSE-SU-2025:3723-1

Timeline

  1. 21-03-2025
    PublishedVulnerability first disclosed.
  2. 21-03-2025
    Last modifiedVulnerability information updated.

Description

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).

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.37%

Chance of exploitation in the next 30 days

Percentile

29%

Versus all other CVEs

30-day change

+0.01 pp

From 0.36% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.37%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu3 products
  • qt6-baseAll versions (No fix recorded)
  • qtbase-opensource-srcAll versions (No fix recorded)
  • qtbase-opensource-src-glesAll versions (No fix recorded)
Debian1 product
  • qt6-baseAll versions (No fix recorded) | < 6.8.2+dfsg-5
Qt1 product
  • qt< 5.15.19 | ≥ 6.0.0, < 6.5.9 | ≥ 6.6.0, < 6.8.0

3 vendors · 5 products

References

8 links