CVE-2026-6040

A heap use-after-free existed when importing the blank-width characters of an ODF number format. A position value read from the document was not checked against the length of the format-code string, so a malformed number format could be processed against memory outside that string. In fixed versions the position is bounds-checked before use.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.3 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.libreoffice.org/about-us/security/advisories/cve-2026-6040
https://access.redhat.com/security/cve/CVE-2026-6040
https://bugzilla.redhat.com/show_bug.cgi?id=2488966
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6040.json

Configurations

No configuration.

History

No history.

Information

Published : 2026-06-15 18:16

Updated : 2026-07-23 12:18

NVD link : CVE-2026-6040

Mitre link : CVE-2026-6040

CVE.ORG link : CVE-2026-6040

JSON object : View

Products Affected

No product.

CWE

CWE-416

Use After Free

CWE-787

Out-of-bounds Write

CWE-825

Expired Pointer Dereference

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A position value read from the document was not checked against the length of the format-code string, so a malformed number format could be processed against memory outside that string. In fixed versions the position is bounds-checked before use."}], "lastModified": "2026-07-23T12:18:48.317", "sourceIdentifier": "security@documentfoundation.org"}