CVE-2026-8356 — Stack buffer overflow in PPT presentation import

CVE-2026-8356

Stack buffer overflow in PPT presentation import PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
The Document Foundation / LibreOffice	affected 26.2 before < 26.2.4

CWE

CWE-787, CWE-121

References

https://www.libreoffice.org/about-us/security/advisories/cve-2026-8356

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.