CVE-2026-8356
Stack buffer overflow in PPT presentation import
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
LibreOffice can import presentations in the legacy binary PPT format. A stack buffer overflow existed when importing a colour-replacement record. Two fixed-size colour tables were filled from the file, but the write position was not reset between the two passes over the record, so a file whose combined colour counts exceeded the table size wrote past the end of the tables on the stack. In fixed versions the unused second pass is no longer read into those tables.
| CWE | CWE-787 CWE-121 |
| Vendor | the document foundation |
| Product | libreoffice |
| Published | Jun 15, 2026 |
| Last Updated | Jun 15, 2026 |
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Affected Versions
The Document Foundation / LibreOffice
26.2 < < 26.2.4
References
Credits
Anthropic (automated discovery using Claude) Arthur Chan of Ada Logics (validation and reporting)