Home / mailings [SECURITY] [DSA 6251-1] libreoffice security update
Posted on 07 May 2026
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6251-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
May 07, 2026 https://www.debian.org/security/faq
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Package : libreoffice
CVE ID : CVE-2026-4430
Dun Anh Nguyen discovered a buffer overflow in LibreOffice, which could
result in an out-of-bounds write if OOXML documents with malformed
encryption parameters are opened.
For the oldstable distribution (bookworm), this problem has been fixed
in version 4:7.4.7-1+deb12u11.
For the stable distribution (trixie), this problem has been fixed in
version 4:25.2.3-2+deb13u4.
We recommend that you upgrade your libreoffice packages.
For the detailed security status of libreoffice please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libreoffice
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
