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CVE-2026-76181VulnerabilityPublished

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

Source GCVE Database

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Authoritative record:CVE-2026-76181· Medium 5.4

Public exploit available · CVSS 5.4 Medium.

Data as of 5 Nov 2026, 22:34 UTC

CVSS 4.0 base score
5.4Medium
How severe the flaw is on the 0–10 CVSS scale.

Sources agree

CVSS scores by source
CNA (Document Fdn.)CVSS 4.05.4
CISA-ADPCVSS 3.16.6
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: evidence found.

    CVSS exploit maturity: proof of concept public

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CVSS vector, the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
The Document FoundationLibreOfficeAffected
  • =26.2
  • =26.8
Fixed in–
Libreofficelibreoffice/libreofficepkg:deb/libreoffice/libreofficeOther threatsAffected
  • =26.2
  • =26.8
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

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.

References

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