CVE-2026-63273

Name	CVE-2026-63273
Description	LibreOffice Draw can import PDF documents. A heap buffer overflow existed when importing an encrypted document. The length of the decryption key was taken from the document's own encryption dictionary and was used to fill a fixed size key buffer without being checked against it, so a length larger than that buffer wrote past its end. In fixed versions a declared key length larger than the buffer is rejected.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libreoffice (PTS)	bookworm	4:7.4.7-1+deb12u14	vulnerable
	bookworm (security)	4:7.4.7-1+deb12u13	vulnerable
	trixie	4:25.2.3-2+deb13u6	vulnerable
	trixie (security)	4:25.2.3-2+deb13u5	vulnerable
	forky, sid	4:26.8.0.3-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libreoffice	source	(unstable)	4:26.2.5.2-1

https://www.libreoffice.org/security/#cve-2026-63273