Quick answers
- Is CVE-2026-6045 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-6045 being exploited in the wild.
- How severe is CVE-2026-6045?
- Informational severity, with a CVSS score of 5.4, published 15 June 2026.
- Which products and versions are affected?
- The Document Foundation LibreOffice Versions prior to fix (specific fixed versions not listed in text for this CVE).
- Is there a fix for CVE-2026-6045?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-6045 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-6045?
- Check whether you run The Document Foundation LibreOffice at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A heap buffer overflow exists in LibreOffice's EMF+ graphic import component. The vulnerability is caused by an integer overflow (CWE-190) when calculating the allocation size for gradient blend points. The application reads the number of blend points from a file and multiplies it to determine the buffer size; if this multiplication overflows, a small buffer is allocated. Subsequent data is then written into this undersized buffer, resulting in an out-of-bounds write (CWE-787). An attacker can exploit this by providing a specially crafted document containing a malicious EMF+ image. Fixed versions mitigate this by validating the blend-point count against the actual available data before performing the allocation.
Affected products
- The Document Foundation LibreOffice Versions prior to fix (specific fixed versions not listed in text for this CVE)
Timeline
- 2026-06-15: disclosed: CVE published to NVD dataset