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Fencer Vulns
high 8.7

CVE-2025-12385 json

Improper validation of <img> tag size in Text component parser

published 2025-12-03 11 mo ago modified 2026-10-18 21 d ago also EUVD-2025-201103

cvss
8.7
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits
0
none known

Summary

Allocation of Resources Without Limits or Throttling, Improper Validation of Specified Quantity in Input vulnerability in The Qt Company Qt on Windows, MacOS, Linux, iOS, Android, x86, ARM, 64 bit, 32 bit allows Excessive Allocation.

This issue affects users of the Text component in Qt Quick. Missing validation of the width and height in the <img> tag could cause an application to become unresponsive.

This issue affects Qt: from 5.0.0 through 6.5.10, from 6.6.0 through 6.8.5, from 6.9.0 through 6.10.0.

Patch / fix

  • qtdeclarative-opensource-src Debian 14 5.15.17+dfsg-4

debian advisories DEBIAN-CVE-2025-12385

  • qtdeclarative-opensource-src Ubuntu Pro 20.04 LTS 5.12.8-0ubuntu1+esm1
  • qtdeclarative-opensource-src Ubuntu Pro 22.04 LTS 5.15.3+dfsg-1ubuntu0.1~esm1
  • qtdeclarative-opensource-src Ubuntu Pro 24.04 LTS 5.15.13+dfsg-1ubuntu0.1+esm1

ubuntu advisories UBUNTU-CVE-2025-12385

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • qtdeclarative Azure Linux 3.0 6.6.1-2

azure linux advisories AZL-71555

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-12385 updated cvss 7.5

qt5-qtdeclarative: qt6-qtdeclarative: Improper validation of <img> tag size in Text component parser

  • Red Hat Enterprise Linux 7 qt5-qtdeclarative, qt5-qtdeclarative-examples Red Hat Enterprise Linux 9 qt5-qtdeclarative, qt5-qtdeclarative-examples
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 10 qt6-qtdeclarative 6.10.1-2.el10
    affected: workaround, no fix available “Fix deferred”
  • Red Hat Enterprise Linux AppStream (v. 8) qt5-qtdeclarative 5.15.3-3.el8_10, qt5-qtdeclarative-examples 5.15.3-3.el8_10 Red Hat Enterprise Linux CRB (v. 8) qt5-qtdeclarative-static 5.15.3-3.el8_10, qt5-qtdeclarative-debuginfo 5.15.3-3.el8_10, qt5-qtdeclarative-debugsource 5.15.3-3.el8_10, qt5-qtdeclarative-devel-debuginfo 5.15.3-3.el8_10, qt5-qtdeclarative-tests-debuginfo 5.15.3-3.el8_10, qt5-qtdeclarative-examples-debuginfo 5.15.3-3.el8_10
    fixed: vendor fix RHSA-2026:96075

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
11 mo ago

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CNA 4.0 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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

Affected products

  • Qt Qt

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling
  • CWE-1284 Improper Validation of Specified Quantity in Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.