Vulnerability-Lookup

CVE-2026-9499 (GCVE-0-2026-9499)

Vulnerability from cvelistv5 – Published: 2026-07-21 13:25 – Updated: 2026-07-22 18:28

Title

Out-of-bounds read in QTextCodec::codecForName() in Qt

Summary

An out-of-bounds read (buffer over-read) vulnerability exists in QTextCodec::codecForName() in Qt. When the function is called with a QByteArray that is not NUL-terminated (for example, one created with QByteArray::fromRawData()), the codec-name matching routine reads past the end of the supplied buffer. In most cases this results in an incorrect text codec being selected; in the worst case, if the over-read reaches unmapped memory, the process crashes (denial of service). The over-read is bounded by the length of the longest codec-name candidate, and the out-of-bounds bytes are only compared internally against Qt's fixed list of codec names, so no data is disclosed to an attacker. Applications that do not pass non-NUL-terminated QByteArrays to QTextCodec::codecForName() are not exposed. The affected code resides in the Qt5Compat module from Qt 6.0.0 onward, and in Qt Core (qtbase) in Qt 4.x and Qt 5.x.

Severity

6.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-22 18:13 UTC

CWE

CWE-125 - Out-of-bounds Read

Assigner

TQtC CNA

CNA scorecard – unranked: 7 records in the last 180 days, 10 needed details

References

4 references

URL	Tags
https://codereview.qt-project.org/c/qt/qt5compat/…	patch
https://codereview.qt-project.org/c/qt/qt5compat/…	patch
https://codereview.qt-project.org/c/qt/qt5compat/…	patch
https://codereview.qt-project.org/c/qt/tqtc-qt5co…	patch

Impacted products

2 products

Vendor	Product	Version	CPE status
Qt	Qt	Affected: 6.0.0 , < 6.8.8 (python) Affected: 6.9.0 , < 6.11.1 (python) cpe:2.3:a:qt:qt::::::::
Qt	Qt	Affected: 4.0.0 , < 6.0.0 (python) cpe:2.3:a:qt:qt::::::::

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              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-540 Overread Buffers"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "PRESENT",
                "attackVector": "NETWORK",
                "baseScore": 6.3,
                "baseSeverity": "MEDIUM",
                "exploitMaturity": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "LOW",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "format": "CVSS",
              "scenarios": [
                {
                  "lang": "en",
                  "value": "GENERAL"
                }
              ]
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-125",
                  "description": "CWE-125 Out-of-bounds Read",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-21T13:25:27.477Z",
            "orgId": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
            "shortName": "TQtC"
          },
          "references": [
            {
              "name": "Fix (dev, released in Qt 6.12.0)",
              "tags": [
                "patch"
              ],
              "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/723911"
            },
            {
              "name": "Fix (6.11 branch, released in Qt 6.11.1)",
              "tags": [
                "patch"
              ],
              "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/724348"
            },
            {
              "name": "Fix (6.10 branch)",
              "tags": [
                "patch"
              ],
              "url": "https://codereview.qt-project.org/c/qt/qt5compat/+/724995"
            },
            {
              "name": "Fix (6.8 LTS branch, released in Qt 6.8.8)",
              "tags": [
                "patch"
              ],
              "url": "https://codereview.qt-project.org/c/qt/tqtc-qt5compat/+/725112"
            }
          ],
          "solutions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eUpdate to Qt 6.8.8, Qt 6.11.1, Qt 6.12.0, or later, or apply the referenced patch.\u003c/p\u003e"
                }
              ],
              "value": "Update to Qt 6.8.8, Qt 6.11.1, Qt 6.12.0, or later, or apply the referenced patch."
            }
          ],
          "source": {
            "discovery": "INTERNAL"
          },
          "title": "Out-of-bounds read in QTextCodec::codecForName() in Qt",
          "x_generator": {
            "engine": "Vulnogram 1.0.4"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a59d8014-47c4-4630-ab43-e1b13cbe58e3",
        "assignerShortName": "TQtC",
        "cveId": "CVE-2026-9499",
        "datePublished": "2026-07-21T13:25:27.477Z",
        "dateReserved": "2026-05-25T09:55:56.600Z",
        "dateUpdated": "2026-07-22T18:28:22.217Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

OESA-2026-3939 (CVE-2026-9499)

Vulnerability from osv_openeuler – Published: 2026-09-20 13:23 – Updated: 2026-09-20 13:23 – Source website

Summary

qt5-qtbase security update

Details

Qt is a software toolkit for developing applications.

Security Fix(es):

Severity

6.3 (Medium)


                    
                      CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-9499	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "qt5-qtbase-5.15.10-17.oe2403sp1.aarch64.rpm",
          "qt5-qtbase-debuginfo-5.15.10-17.oe2403sp1.aarch64.rpm",
          "qt5-qtbase-debugsource-5.15.10-17.oe2403sp1.aarch64.rpm",
          "qt5-qtbase-devel-5.15.10-17.oe2403sp1.aarch64.rpm",
          "qt5-qtbase-examples-5.15.10-17.oe2403sp1.aarch64.rpm",
          "qt5-qtbase-gui-5.15.10-17.oe2403sp1.aarch64.rpm",
          "qt5-qtbase-mysql-5.15.10-17.oe2403sp1.aarch64.rpm",
          "qt5-qtbase-odbc-5.15.10-17.oe2403sp1.aarch64.rpm",
          "qt5-qtbase-postgresql-5.15.10-17.oe2403sp1.aarch64.rpm",
          "qt5-qtbase-private-devel-5.15.10-17.oe2403sp1.aarch64.rpm",
          "qt5-qtbase-static-5.15.10-17.oe2403sp1.aarch64.rpm"
        ],
        "noarch": [
          "qt5-qtbase-common-5.15.10-17.oe2403sp1.noarch.rpm"
        ],
        "src": [
          "qt5-qtbase-5.15.10-17.oe2403sp1.src.rpm"
        ],
        "x86_64": [
          "qt5-qtbase-5.15.10-17.oe2403sp1.x86_64.rpm",
          "qt5-qtbase-debuginfo-5.15.10-17.oe2403sp1.x86_64.rpm",
          "qt5-qtbase-debugsource-5.15.10-17.oe2403sp1.x86_64.rpm",
          "qt5-qtbase-devel-5.15.10-17.oe2403sp1.x86_64.rpm",
          "qt5-qtbase-examples-5.15.10-17.oe2403sp1.x86_64.rpm",
          "qt5-qtbase-gui-5.15.10-17.oe2403sp1.x86_64.rpm",
          "qt5-qtbase-mysql-5.15.10-17.oe2403sp1.x86_64.rpm",
          "qt5-qtbase-odbc-5.15.10-17.oe2403sp1.x86_64.rpm",
          "qt5-qtbase-postgresql-5.15.10-17.oe2403sp1.x86_64.rpm",
          "qt5-qtbase-private-devel-5.15.10-17.oe2403sp1.x86_64.rpm",
          "qt5-qtbase-static-5.15.10-17.oe2403sp1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP1",
        "name": "qt5-qtbase",
        "purl": "pkg:rpm/openEuler/qt5-qtbase\u0026distro=openEuler-24.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.15.10-17.oe2403sp1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Qt is a software toolkit for developing applications.\r\n\r\nSecurity Fix(es):\n\nAn out-of-bounds read (buffer over-read) vulnerability exists in QTextCodec::codecForName() in Qt. When the function is called with a QByteArray that is not NUL-terminated (for example, one created with QByteArray::fromRawData()), the codec-name matching routine reads past the end of the supplied buffer. In most cases this results in an incorrect text codec being selected; in the worst case, if the over-read reaches unmapped memory, the process crashes (denial of service). The over-read is bounded by the length of the longest codec-name candidate, and the out-of-bounds bytes are only compared internally against Qt\u0026apos;s fixed list of codec names, so no data is disclosed to an attacker. Applications that do not pass non-NUL-terminated QByteArrays to QTextCodec::codecForName() are not exposed. The affected code resides in the Qt5Compat module from Qt 6.0.0 onward, and in Qt Core (qtbase) in Qt 4.x and Qt 5.x.(CVE-2026-9499)",
  "id": "OESA-2026-3939",
  "modified": "2026-09-20T13:23:24Z",
  "published": "2026-09-20T13:23:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3939"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9499"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "qt5-qtbase security update",
  "upstream": [
    "CVE-2026-9499"
  ]
}

OESA-2026-4062 (CVE-2026-9499)

Vulnerability from osv_openeuler – Published: 2026-09-25 01:27 – Updated: 2026-09-25 01:27 – Source website

Summary

qt5-qtbase security update

Details

Qt is a software toolkit for developing applications.

Security Fix(es):

Severity

6.3 (Medium)


                    
                      CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-9499	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "qt5-qtbase-5.15.10-17.oe2403sp4.aarch64.rpm",
          "qt5-qtbase-debuginfo-5.15.10-17.oe2403sp4.aarch64.rpm",
          "qt5-qtbase-debugsource-5.15.10-17.oe2403sp4.aarch64.rpm",
          "qt5-qtbase-devel-5.15.10-17.oe2403sp4.aarch64.rpm",
          "qt5-qtbase-examples-5.15.10-17.oe2403sp4.aarch64.rpm",
          "qt5-qtbase-gui-5.15.10-17.oe2403sp4.aarch64.rpm",
          "qt5-qtbase-mysql-5.15.10-17.oe2403sp4.aarch64.rpm",
          "qt5-qtbase-odbc-5.15.10-17.oe2403sp4.aarch64.rpm",
          "qt5-qtbase-postgresql-5.15.10-17.oe2403sp4.aarch64.rpm",
          "qt5-qtbase-private-devel-5.15.10-17.oe2403sp4.aarch64.rpm",
          "qt5-qtbase-static-5.15.10-17.oe2403sp4.aarch64.rpm"
        ],
        "noarch": [
          "qt5-qtbase-common-5.15.10-17.oe2403sp4.noarch.rpm"
        ],
        "src": [
          "qt5-qtbase-5.15.10-17.oe2403sp4.src.rpm"
        ],
        "x86_64": [
          "qt5-qtbase-5.15.10-17.oe2403sp4.x86_64.rpm",
          "qt5-qtbase-debuginfo-5.15.10-17.oe2403sp4.x86_64.rpm",
          "qt5-qtbase-debugsource-5.15.10-17.oe2403sp4.x86_64.rpm",
          "qt5-qtbase-devel-5.15.10-17.oe2403sp4.x86_64.rpm",
          "qt5-qtbase-examples-5.15.10-17.oe2403sp4.x86_64.rpm",
          "qt5-qtbase-gui-5.15.10-17.oe2403sp4.x86_64.rpm",
          "qt5-qtbase-mysql-5.15.10-17.oe2403sp4.x86_64.rpm",
          "qt5-qtbase-odbc-5.15.10-17.oe2403sp4.x86_64.rpm",
          "qt5-qtbase-postgresql-5.15.10-17.oe2403sp4.x86_64.rpm",
          "qt5-qtbase-private-devel-5.15.10-17.oe2403sp4.x86_64.rpm",
          "qt5-qtbase-static-5.15.10-17.oe2403sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP4",
        "name": "qt5-qtbase",
        "purl": "pkg:rpm/openEuler/qt5-qtbase\u0026distro=openEuler-24.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.15.10-17.oe2403sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": "Qt is a software toolkit for developing applications.\r\n\r\nSecurity Fix(es):\n\nAn out-of-bounds read (buffer over-read) vulnerability exists in QTextCodec::codecForName() in Qt. When the function is called with a QByteArray that is not NUL-terminated (for example, one created with QByteArray::fromRawData()), the codec-name matching routine reads past the end of the supplied buffer. In most cases this results in an incorrect text codec being selected; in the worst case, if the over-read reaches unmapped memory, the process crashes (denial of service). The over-read is bounded by the length of the longest codec-name candidate, and the out-of-bounds bytes are only compared internally against Qt\u0026apos;s fixed list of codec names, so no data is disclosed to an attacker. Applications that do not pass non-NUL-terminated QByteArrays to QTextCodec::codecForName() are not exposed. The affected code resides in the Qt5Compat module from Qt 6.0.0 onward, and in Qt Core (qtbase) in Qt 4.x and Qt 5.x.(CVE-2026-9499)",
  "id": "OESA-2026-4062",
  "modified": "2026-09-25T01:27:54Z",
  "published": "2026-09-25T01:27:54Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4062"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9499"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "qt5-qtbase security update",
  "upstream": [
    "CVE-2026-9499"
  ]
}

OESA-2026-4099 (CVE-2026-9499)

Vulnerability from osv_openeuler – Published: 2026-09-25 01:28 – Updated: 2026-09-25 01:28 – Source website

Summary

qt6-qt5compat security update

Details

Security Fix(es):

Severity

6.3 (Medium)


                    
                      CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2026-9499	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "qt6-qt5compat-6.5.2-2.oe2403sp3.aarch64.rpm",
          "qt6-qt5compat-debuginfo-6.5.2-2.oe2403sp3.aarch64.rpm",
          "qt6-qt5compat-debugsource-6.5.2-2.oe2403sp3.aarch64.rpm",
          "qt6-qt5compat-devel-6.5.2-2.oe2403sp3.aarch64.rpm"
        ],
        "src": [
          "qt6-qt5compat-6.5.2-2.oe2403sp3.src.rpm"
        ],
        "x86_64": [
          "qt6-qt5compat-6.5.2-2.oe2403sp3.x86_64.rpm",
          "qt6-qt5compat-debuginfo-6.5.2-2.oe2403sp3.x86_64.rpm",
          "qt6-qt5compat-debugsource-6.5.2-2.oe2403sp3.x86_64.rpm",
          "qt6-qt5compat-devel-6.5.2-2.oe2403sp3.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP3",
        "name": "qt6-qt5compat",
        "purl": "pkg:rpm/openEuler/qt6-qt5compat\u0026distro=openEuler-24.03-LTS-SP3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.5.2-2.oe2403sp3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "Medium"
  },
  "details": ".\r\n\r\nSecurity Fix(es):\n\nAn out-of-bounds read (buffer over-read) vulnerability exists in QTextCodec::codecForName() in Qt. When the function is called with a QByteArray that is not NUL-terminated (for example, one created with QByteArray::fromRawData()), the codec-name matching routine reads past the end of the supplied buffer. In most cases this results in an incorrect text codec being selected; in the worst case, if the over-read reaches unmapped memory, the process crashes (denial of service). The over-read is bounded by the length of the longest codec-name candidate, and the out-of-bounds bytes are only compared internally against Qt\u0026apos;s fixed list of codec names, so no data is disclosed to an attacker. Applications that do not pass non-NUL-terminated QByteArrays to QTextCodec::codecForName() are not exposed. The affected code resides in the Qt5Compat module from Qt 6.0.0 onward, and in Qt Core (qtbase) in Qt 4.x and Qt 5.x.(CVE-2026-9499)",
  "id": "OESA-2026-4099",
  "modified": "2026-09-25T01:28:24Z",
  "published": "2026-09-25T01:28:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4099"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9499"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "qt6-qt5compat security update",
  "upstream": [
    "CVE-2026-9499"
  ]
}

RHSA-2026:41389

Vulnerability from csaf_redhat - Published: 2026-07-18 05:31 - Updated: 2026-10-05 18:13

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2026-9499.

CVE-2026-9499

A flaw was found in Qt, a popular software development framework. This vulnerability, an out-of-bounds read, occurs in the `QTextCodec::codecForName()` function when it processes specially crafted input that is not properly terminated. An attacker could exploit this to cause the application to select an incorrect text encoding, or in the worst case, trigger a crash, leading to a denial of service. This flaw does not result in the disclosure of sensitive information.

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Fixed: 7 products

https://access.redhat.com/errata/RHSA-2026:41389

Open the full advisory

RHSA-2026:70560

Vulnerability from csaf_redhat - Published: 2026-09-23 20:09 - Updated: 2026-10-01 23:41

Summary

Red Hat Security Advisory: qt5-qtbase security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2026-9499.

CVE-2026-9499

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Fixed: 87 products

https://access.redhat.com/errata/RHSA-2026:70560

Open the full advisory

RHSA-2026:70561

Vulnerability from csaf_redhat - Published: 2026-09-23 07:10 - Updated: 2026-10-01 23:41

Summary

Red Hat Security Advisory: qt5-qtbase security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2026-9499.

CVE-2026-9499

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Fixed: 87 products

https://access.redhat.com/errata/RHSA-2026:70561

Open the full advisory

RHSA-2026:65816

Vulnerability from csaf_opensuse - Published: 2026-09-09 07:19 - Updated: 2026-10-01 23:40

Summary

Red Hat Security Advisory: qt6-qt5compat security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2026-9499.

CVE-2026-9499

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Fixed: 45 products

https://access.redhat.com/errata/RHSA-2026:65816

Open the full advisory

RHSA-2026:65897

Vulnerability from csaf_opensuse - Published: 2026-09-09 11:17 - Updated: 2026-10-01 23:40

Summary

Red Hat Security Advisory: qt5-qtbase security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2026-9499.

CVE-2026-9499

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Fixed: 137 products

https://access.redhat.com/errata/RHSA-2026:65897

Open the full advisory

RHSA-2026:65993

Vulnerability from csaf_opensuse - Published: 2026-09-09 15:27 - Updated: 2026-10-01 23:40

Summary

Red Hat Security Advisory: qt5-qtbase security update

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2026-9499.

CVE-2026-9499

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Fixed: 137 products

https://access.redhat.com/errata/RHSA-2026:65993

Open the full advisory

RHSA-2026:70562

Vulnerability from csaf_opensuse - Published: 2026-09-23 00:00 - Updated: 2026-10-09 09:46

Summary

security update for qt5-qtbase

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2026-9499.

CVE-2026-9499

5.9 (Medium)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 19 products

Open the full advisory

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CVE-2026-9499 (GCVE-0-2026-9499)

OESA-2026-3939 (CVE-2026-9499)

OESA-2026-4062 (CVE-2026-9499)

OESA-2026-4099 (CVE-2026-9499)

RHSA-2026:41389

RHSA-2026:70560

RHSA-2026:70561

RHSA-2026:65816

RHSA-2026:65897

RHSA-2026:65993

RHSA-2026:70562

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Related by attack behaviour