SecuriTricks - CVE-2026-6040

Description

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.

Product(s) Impacted

Vendor	Product	Versions
Documentfoundation	Libreoffice	*
Apache	Openoffice	*

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-416

Use After Free

Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	documentfoundation	libreoffice	/	/	/	/	/	/	/	/
a	apache	openoffice	/	/	/	/	/	/	/	/

References

https://www.libreoffice.org/about-us/security/advisories/cve-2026-6040

CVSS Score

5.4 / 10

CVSS Data - 4.0

Attack Vector: LOCAL
Attack Complexity: LOW
Attack Requirements: NONE
Privileges Required: NONE
User Interaction: PASSIVE
Scope:
Confidentiality Impact: LOW
Integrity Impact: LOW
Availability Impact: HIGH
Exploit Maturity: PROOF_OF_CONCEPT

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

View Vector String

Timeline

Published: June 15, 2026, 6:16 p.m.
Last Modified: June 15, 2026, 8:55 p.m.

Status : Deferred

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-6040