Bundesamt für Sicherheit in der Informationstechnik Amazon · QT (Declarative module): Schwachstelle ermöglicht Denial of Service
Affects Bundesamt für Sicherheit in der Informationstechnik AmazonSource GCVE Database
Not known to be exploited · CVSS 8.7 High : upgrade to 6.8.6 or 6.5.11 soon.
Data as of 9 Nov 2026, 14:50 UTC
- 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:NExploitation evidence
Disclosed: evidence found.
CVE published 3 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 9 Nov 2026.
What to do
Upgrade qt/qtdeclarative to 6.8.6 or 6.5.11.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
GitHubqt/qtdeclarativepkg:github/qt/qtdeclarativeOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
The vulnerability is addressed by updates available through Ubuntu Pro Extended Security Maintenance (ESM) for affected Ubuntu LTS releases. Users should apply these updates to the libqt5quick5 package as provided by their Ubuntu Pro subscription. A standard system update with Ubuntu Pro ESM will apply the necessary fixes. No additional mitigation steps are indicated by the vendor advisory.
Description
A vulnerability in the Qt Declarative module allows specially crafted input to cause excessive resource consumption, resulting in a denial of service. The flaw involves improper validation of the width and height attributes of image tags in the Text component of Qt Quick. This issue affects multiple Ubuntu LTS releases and can be mitigated by applying updates provided via Ubuntu Pro Extended Security Maintenance (ESM).
References
- wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-2736.json (opens in a new tab)
- wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-2736 (opens in a new tab)
- qt.io/blog/security-advisory-improper-validation-of-img-tag-size-in-text-component-parser (opens in a new tab)
- bodhi.fedoraproject.org/updates/FEDORA-2025-62d125612b (opens in a new tab)
- msrc.microsoft.com/update-guide/ (opens in a new tab)
- alas.aws.amazon.com/AL2/ALAS2-2025-3101.html (opens in a new tab)
- alas.aws.amazon.com/AL2/ALAS2-2025-3102.html (opens in a new tab)
- ubuntu.com/security/notices/USN-8357-1 (opens in a new tab)
- bodhi.fedoraproject.org/updates/FEDORA-2026-587a1cec32 (opens in a new tab)
- bodhi.fedoraproject.org/updates/FEDORA-2026-29e4b8a289 (opens in a new tab)
- bodhi.fedoraproject.org/updates/FEDORA-2026-2caff2e30b (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:96075 (opens in a new tab)