CVE-2026-63272 — Heap buffer overflow in WMF text record import

CVE-2026-63272

Heap buffer overflow in WMF text record import PUBLISHED

Description (CNA)

LibreOffice can import WMF graphics, which may be embedded in documents. A heap buffer overflow existed when importing a text record that carries its own character advance widths. The count of advance values and the length of the text were read separately from the file and were not required to agree, so drawing the text walked the advance array by character position and ran past its end when the array was the shorter of the two. In fixed versions an advance array shorter than its text is ignored.

Affected (CNA)

Vendor / product	Versions
The Document Foundation / LibreOffice	affected 26.2 before < 26.2.5

CWE

CWE-787, CWE-125

References

https://www.libreoffice.org/about-us/security/advisories/cve-2026-63272

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.