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.
History

Mon, 15 Jun 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 15 Jun 2026 18:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Stack buffer overflow in PPT presentation import
Weaknesses CWE-121
CWE-787
References
Metrics cvssV4_0

{'score': 5.4, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Document Fdn.

Published:

Updated: 2026-06-15T18:05:22.786Z

Reserved: 2026-05-11T18:42:20.783Z

Link: CVE-2026-8356

cve-icon Vulnrichment

Updated: 2026-06-15T18:05:17.104Z

cve-icon NVD

Status : Received

Published: 2026-06-15T18:16:37.390

Modified: 2026-06-15T18:16:37.390

Link: CVE-2026-8356

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.