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CVE-2025-12385VulnerabilityPublished Updated

CVE-2025-12385: Qt · Unthrottled Resource Allocation

Affects QtSource CVE Database V5

0

Not known to be exploited · CVSS 8.7 High : upgrade to 6.8.6 or 6.5.11 soon.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 24% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 6.8.6, 6.5.11
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Dec 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Upgrade qt/qtdeclarative to 6.8.6 or 6.5.11.

Affected software

ProductAffectedFixed in
GitHubqt/qtdeclarativepkg:github/qt/qtdeclarativeOther threatsAffected
  • 5.0.0 <6.5.11
  • 6.6.0 <6.8.6
  • 6.9.0 <=6.10.0
Fixed in
  • 6.5.11
  • 6.8.6

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

If you cannot patch yet, developers should consider implementing input validation or throttling mechanisms for resource allocation related to image dimensions in the Qt Quick Text component.

Description

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.

References

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