Heap buffer overflow in dBASE index import

Description

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.

Scores

EPSS (exploitation in 30 days)

0.14% · top 97% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.

Weakness

• CWE-787 Out-of-bounds Write (opens in a new tab)All about CWE-787 and its CVEs
• CWE-674 Uncontrolled Recursion (opens in a new tab)All about CWE-674 and its CVEs

Affected products

• The Document Foundation · LibreOffice

  • affected 26.2 – < < 26.2.6
  • affected 26.8 – < < 26.8.1

References (1)

• https://www.libreoffice.org/about-us/security/advisories/cve-2026-76181 (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-76181](https://trackcve.app/badge/CVE-2026-76181.svg)](https://trackcve.app/cve/CVE-2026-76181)

Record last updated 5 Nov 2026, 20:19 UTC.