Out-of-bounds read in LibreOffice - CVE-2026-63279
Published: October 19, 2026
Vulnerability identifier: #VU156157
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-63279
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in PICT image import. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.
Affected software
LibreOffice
Debian Linux
libreoffice (Debian package)
Debian Linux
libreoffice (Debian package)
How to mitigate CVE-2026-63279
Install updates from vendor's website.
LibreOffice - update to 26.2.5
libreoffice (Debian package) - update to 4:25.2.3-2+deb13u7
libreoffice (Debian package) - update to 4:25.2.3-2+deb13u7