CVE-2026-76181: Heap buffer overflow in dBASE index import
- Is it exploited?
Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of . If CISA adds it, this page shows it as known exploited.
- How likely is exploitation in the next 30 days?
- 0.1%
EPSS score, percentile 3.3 of all scored records. A probability estimated by FIRST, not a report of exploitation.
- How severe?
- 5.4 Medium
CVSS v4.0 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
No patch or vendor advisory is listed in the CVE record. Check The Document Foundation's advisories.
- Which versions are affected?
Affected
- from 26.2 to before < 26.2.6
- from 26.8 to before < 26.8.1
Source: CISA KEV 2026.11.10, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
Description
Heap buffer overflow in dBASE index import
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.
Source: CVE List, as of . About the data.
What to do
Advisories and patches
No patch, vendor advisory or mitigation is listed in the CVE record. Check The Document Foundation's own security advisories for a fix, and compare your version with the affected versions below.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
Versions by product, as listed in the CVE record (1 product)
| Status | Versions |
|---|---|
| Affected | from 26.2 to before < 26.2.6 |
| Affected | from 26.8 to before < 26.8.1 |
Versions not listed are: unknown.
Source: CVE List, as of . About the data.
Weakness
CWE-787, CWE-674, 1 CAPEC
Attack patterns (CAPEC)
- CAPEC-44: Overflow Binary Resource File
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published |