CVE-2026-6045 (GCVE-0-2026-6045)

Vulnerability from cvelistv5 – Published: 2026-06-15 16:22 – Updated: 2026-10-21 09:30
VLAI
Title
Heap buffer overflow in EMF+ gradient brush import
Summary
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.
Severity
5.4 (Medium)
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
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-15 18:12 UTC
CWE
  • CWE-787 - Out-of-bounds Write
  • CWE-190 - Integer Overflow or Wraparound
Assigner
Document Fdn. CNA
CNA scorecard C 75/100 over 21 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
The Document Foundation LibreOffice Affected: 25.8 , < < 25.8.7 (25.8 series)
Affected: 26.2 , < < 26.2.3 (26.2 series)
guessed Create a notification for this product.
Date Public
2026-06-15 00:00
Credits
Anthropic (automated discovery using Claude) Trail of Bits (triage and validation) Anonymous working with TrendAI Zero Day Initiative Caolán McNamara of Collabora Productivity
Show details on NVD website
To clipboard 

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