CVE-2026-6040
Published:June 15, 2026
Updated:June 29, 2026
A heap use-after-free existed when importing the blank-width characters of an ODF number format. A position value read from the document was not checked against the length of the format-code string, so a malformed number format could be processed against memory outside that string. In fixed versions the position is bounds-checked before use.
Affected Packages
https://github.com/LibreOffice/core.git (GITHUB):
Affected version(s) >=libreoffice-25.8.0.1 <libreoffice-25.8.7.1Fix Suggestion:
Update to version libreoffice-25.8.7.1https://github.com/LibreOffice/core.git (GITHUB):
Affected version(s) >=libreoffice-24.2.0.1 <libreoffice-26.2.3.1Fix Suggestion:
Update to version libreoffice-26.2.3.1Related Resources (1)
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Contact UsCVSS v4
Base Score:
5.4
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
POC
CVSS v3
Base Score:
6.6
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
HIGH
EPSS
Base Score:
0.12