CVE-2026-76181
MediumCVSS 6.6Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
LibreOffice's dBASE database driver has a heap buffer overflow when reading .ndx index pages. The number of entries recorded in a page was not checked against the page's capacity, and a crafted index could make a page refer back to itself, causing endless recursion.
Risk Assessment
Opening a malicious dBASE file or folder may crash the application or potentially allow code execution in the user's context.
Recommendation
Update LibreOffice to a fixed version and avoid opening untrusted dBASE data sources.
Other vulnerabilities in LibreOffice
See all- CVE-2016-4324High
Use-after-free vulnerability in LibreOffice before 5.1.4 allows remote attackers to execute arbitrary code via a crafted RTF file, related to stylesheet and superscript tokens.
- CVE-2016-0795High
LibreOffice versions before 5.0.5 allow remote attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact via a crafted LwpTocSuperLayout record in a LotusWordPro (lwp) document.
- CVE-2014-9093High
LibreOffice versions before 4.3.5 allow remote attackers to cause a denial of service (invalid write operation and crash) and possibly execute arbitrary code via a crafted RTF file.
- CVE-2014-0247High
LibreOffice version 4.2.4 automatically executes unspecified VBA macros, which may lead to unknown impacts and attack vectors.
- CVE-2017-8358Critical
LibreOffice before 2017-03-17 has an out-of-bounds write caused by a heap-based buffer overflow related to the ReadJPEG function in vcl/source/filter/jpeg/jpegc.cxx.
- CVE-2017-7882Critical
LibreOffice before March 14, 2017, has an out-of-bounds write related to the HWPFile::TagsRead function in hwpfilter/source/hwpfile.cxx.
- CVE-2017-7870Critical
LibreOffice before 2017-01-02 has an out-of-bounds write caused by a heap-based buffer overflow related to the tools::Polygon::Insert function in tools/source/generic/poly.cxx.
- CVE-2017-7856Critical
LibreOffice before 2017-03-11 has an out-of-bounds write caused by a heap-based buffer overflow in the SVMConverter::ImplConvertFromSVM1 function.
- CVE-2016-10327Critical
LibreOffice before December 22, 2016, has an out-of-bounds write caused by a heap-based buffer overflow related to the EnhWMFReader::ReadEnhWMF function in vcl/source/filter/wmf/enhwmf.cxx.
- CVE-2026-63277High
LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. A document could name a Java database driver to be loaded from a remote location, so opening the document could run Java code from that location. In fixed versions an entry in a Java class path has to be a file URL.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS