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Vulnerabilities

Vulnerability · CVE-2026-107590

Out-of-bounds write vulnerability in QTextCodec iconv-based encoding impacts Qt

Published Oct 27, 2026 · catalog updated Nov 7, 2026 · Qt

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

Check if you run it

No confirmed exploitation is on record for CVE-2026-107590. EPSS is 0.12%. Act only if a listed version of Qt is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Low1.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.12%
Remediation
Advisory link
Affected products
Debian:12 qt6-5compat · Debian:12 qtbase-opensource-src · Debian:13 qt6-5compat · Debian:13 qtbase-opensource-src · Debian:14 qt6-5compat · Debian:14 qtbase-opensource-src

An out-of-bounds write vulnerability in the Qt QTextCodec iconv-based encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Under certain conditions, encoding text with QTextCodec may write outside an internal buffer. This can cause the application to crash and may affect data integrity.

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 qt6-5compat6.10.2-1, 6.10.2-2, 6.10.2-3
  • Debian:12 qtbase-opensource-src5.15.10+dfsg-1, 5.15.10+dfsg-2, 5.15.10+dfsg-3
  • Debian:13 qt6-5compat6.10.2-1, 6.10.2-2, 6.10.2-3
  • Debian:13 qtbase-opensource-src5.15.15+dfsg-6, 5.15.15+dfsg-6+deb13u1, 5.15.16+dfsg-1
  • Debian:14 qt6-5compat6.10.2-1, 6.10.2-2, 6.10.2-3
  • Debian:14 qtbase-opensource-src5.15.15+dfsg-6, 5.15.16+dfsg-1, 5.15.16+dfsg-2
  • vendor qt Qtversion unspecified

How to fix CVE-2026-107590

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-2026-107590. EPSS is 0.12%. Act only if a listed version of Qt is installed.

Which versions are affected?

Compare what you have installed with 6.10.2-1, 6.10.2-2, 6.10.2-3, 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-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-131; CWE-787: Out-of-bounds Write. EPSS 0.12%. 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 28, 2026 · BSI CERT-Bund

    Detected

    CVE-2026-107590 is listed by QT: Mehrere Schwachstellen.

  2. Nov 7, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    An out-of-bounds write vulnerability in the Qt QTextCodec iconv-based encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Under certain conditions, encoding text with QTextCodec may write outside an internal buffer. This can cause the application to crash and may affect data integrity.

Sources

  • BSI CERT-BundGovernment advisoryCVE-2026-107590

    QT: Mehrere Schwachstellen

    wid.cert-bund.de
  • CVE.orgVulnerability recordCVE-2026-107590

    An out-of-bounds write vulnerability in the Qt QTextCodec iconv-based encoding of the Qt 5 Compatibility APIs module (Qt Core in Qt 5 and earlier) impacts Qt. Under certain conditions, encoding text with QTextCodec may write outside an internal buffer. This can cause the applicat

    cve.org
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-107590
    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.

  • OpenSSF OSV / OSV ScannerNov 7, 2026
  • CVE.orgOct 28, 2026
  • BSI CERT-BundOct 28, 2026