CVE-2026-8356

Summary

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 Software

VendorProductVersion RangeStatus
The Document FoundationLibreOffice26.2 < < 26.2.4affected

Weaknesses

  • CWE-787: CWE-787 Out-of-bounds Write
  • CWE-121: CWE-121 Stack-based Buffer Overflow

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References