ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-16762

Qt Core QXmlStream parser: Schwachstelle ermöglicht Denial of Service

Published Oct 23, 2026 · catalog updated Oct 24, 2026 · Qt Core QXmlStream parser:

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-16762. EPSS is 0.52%. Act only if a listed version of Qt Core QXmlStream parser: is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Qt Core QXmlStream parser:).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.52%
Remediation
Advisory link
Affected products
Debian:12 qt6-base · Debian:12 qtbase-opensource-src · Debian:12 qtbase-opensource-src-gles · Debian:13 qt6-base · Debian:13 qtbase-opensource-src · Debian:13 qtbase-opensource-src-gles

An attacker able to supply a crafted XML document to an application using QXmlStreamReader can cause disproportionate CPU consumption during parsing, making the application unresponsive (denial of service). Exploitation requires only that the application parse attacker-influenced XML; no authentication, privileges, or user interaction beyond ingesting the input are needed. There is no loss of confidentiality or integrity — no data disclosure, data modification, or code execution — and the impact is contained to the affected process.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 qt6-base6.10.2+dfsg-1, 6.10.2+dfsg-10, 6.10.2+dfsg-10+hurd.1
  • Debian:12 qtbase-opensource-src5.15.10+dfsg-1, 5.15.10+dfsg-2, 5.15.10+dfsg-3
  • Debian:12 qtbase-opensource-src-gles5.15.10+dfsg-1, 5.15.10+dfsg-2, 5.15.10+dfsg-3
  • Debian:13 qt6-base6.10.2+dfsg-1, 6.10.2+dfsg-10, 6.10.2+dfsg-10+hurd.1
  • Debian:13 qtbase-opensource-src5.15.15+dfsg-6, 5.15.15+dfsg-6+deb13u1, 5.15.16+dfsg-1
  • Debian:13 qtbase-opensource-src-gles5.15.15+dfsg-2, 5.15.17+dfsg-1, 5.15.17+dfsg-2
  • Debian:14 qt6-base0 → 6.11.2+dfsg-5
  • Debian:14 qtbase-opensource-src5.15.15+dfsg-6, 5.15.16+dfsg-1, 5.15.16+dfsg-2
  • Debian:14 qtbase-opensource-src-gles5.15.15+dfsg-2, 5.15.17+dfsg-1, 5.15.17+dfsg-2
  • vendor qt qtversion unspecified

How to fix CVE-2026-16762

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-16762. EPSS is 0.52%. Act only if a listed version of Qt Core QXmlStream parser: is installed.

Which versions are affected?

Compare what you have installed with 6.10.2+dfsg-1, 6.10.2+dfsg-10, 6.10.2+dfsg-10+hurd.1, 5.15.10+dfsg-1, 5.15.10+dfsg-2, 5.15.10+dfsg-3, 5.15.15+dfsg-6, 5.15.15+dfsg-6+deb13u1, 5.15.16+dfsg-1, 5.15.15+dfsg-2, 5.15.17+dfsg-1, 5.15.17+dfsg-2, 0 → 6.11.2+dfsg-5, 5.15.15+dfsg-6, 5.15.16+dfsg-1, 5.15.16+dfsg-2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-407. EPSS 0.52%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 23, 2026 · BSI CERT-Bund

    Detected

    Qt Core QXmlStream parser: Schwachstelle ermöglicht Denial of Service

  2. Oct 24, 2026 · Trivy Vulnerability DB

    Fix available

    qt6-base fixed in 6.11.2+dfsg-5

  3. Oct 24, 2026 · Trivy Vulnerability DB

    Fix available

    qt6-base fixed in 6.11.2+dfsg-5

  4. Oct 24, 2026 · Trivy Vulnerability DB

    Updated

    An attacker able to supply a crafted XML document to an application using QXmlStreamReader can cause disproportionate CPU consumption during parsing, making the application unresponsive (denial of service). Exploitation requires only that the application parse attacker-influenced XML; no authentication, privileges, or user interaction beyond ingesting the input are needed. There is no loss of conf

Sources

  • BSI CERT-BundGovernment advisoryCVE-2026-16762

    Qt Core QXmlStream parser: Schwachstelle ermöglicht Denial of Service

    wid.cert-bund.de
  • CVE.orgVulnerability recordCVE-2026-16762

    An attacker able to supply a crafted XML document to an application using QXmlStreamReader can cause disproportionate CPU consumption during parsing, making the application unresponsive (denial of service). Exploitation requires only that the application parse attacker-influenced

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-16762

    30-day exploitation probability 0.52%

    first.org
  • Trivy Vulnerability DBPackage advisoryDEBIAN-CVE-2026-16762

    An attacker able to supply a crafted XML document to an application using QXmlStreamReader can cause disproportionate CPU consumption during parsing, making the application unresponsive (denial of service). Exploitation requires only that the application parse attacker-influenced

    osv.dev

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • CVE.orgOct 25, 2026
  • Trivy Vulnerability DBOct 24, 2026
  • BSI CERT-BundOct 23, 2026