CVE-2026-6045
Heap buffer overflow in EMF+ gradient brush import
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 CWE-190 |
| 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
25.8 < < 25.8.7 26.2 < < 26.2.3
References
Credits
Anthropic (automated discovery using Claude) Trail of Bits (triage and validation)