CVE-2026-6045: Heap buffer overflow in EMF+ gradient brush import
The Document Foundation · LibreOffice
Vendor fix available · Affected: The Document Foundation LibreOffice · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 10% of scored CVEs
DescriptionCVE.org
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 products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- The Document Foundation · LibreOfficefrom 25.8 before < 25.8.7; from 26.2 before < 26.2.3
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- The Document Foundation
- Published
- June 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-6045 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.