CVE-2026-6045 — Heap buffer overflow in EMF+ gradient brush import

CVE-2026-6045

Heap buffer overflow in EMF+ gradient brush import PUBLISHED

Description (CNA)

LibreOffice can import EMF+ graphics, which may be embedded in documents. A heap buffer overflow existed when importing an EMF+ gradient brush. The number of gradient blend points was read from the file and used to compute an allocation size, but that multiplication could overflow, so a small buffer was allocated and then filled as if it were large, writing past its end. In fixed versions the blend-point count is checked against the data actually available before allocating.

Affected (CNA)

Vendor / product	Versions
The Document Foundation / LibreOffice	affected 25.8 before < 25.8.7; affected 26.2 before < 26.2.3

CWE

CWE-787, CWE-190

References

https://www.libreoffice.org/about-us/security/advisories/cve-2026-6045

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.