CVE-2026-76181

What it is

LibreOffice includes a dBASE database driver, which reads dBASE tables and their .ndx index files when a folder of dBASE files is used as a data source. A heap buffer overflow existed when an index page was read. The number of entries recorded in a page was not checked against the number of entries the page could hold, which comes from a different field of the index header. A crafted index could also make a page refer back to itself, so that reading it recursed without end. In fixed versions the index header and the entry count of each page are limited to what an index page can hold, and a page that refers back to one of its parent pages is not followed.

At a glance

Exploitability

Can be exploited locally on the machine without logging in, but needs a user to act. High risk of service disruption.

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-11-05 20:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-11-05 21:18 UTC Last updatedMost recent change to the record

Details

Published

2026-11-05 20:17 UTC

Last modified

2026-11-05 21:18 UTC

Weakness

CWE-674

Record status

Received

Attack profile CVSS 4.0 · 5.4

Attack vector

Local

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

Passive

Confidentiality

Low

Integrity

Low

Availability

High