SecuriTricks - CVE-2026-4430

Description

Out-of-bounds write vulnerability in The Document Foundation LibreOffice via crafted OOXML documents with mismatched encryption salt parameters. This issue affects LibreOffice: from 26.2 before 26.2.3, from 25.8 before 25.8.7.

Product(s) Impacted

Vendor	Product	Versions
The Document Foundation	Libreoffice	<26.2, <25.8

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-787

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

*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	the_document_foundation	libreoffice	<26.2	33	/	/	/	/	/	/
a	the_document_foundation	libreoffice	<25.8	7	/	/	/	/	/	/

References

https://www.libreoffice.org/about-us/security/advisories/cve-2026-4430

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: May 7, 2026, 8:16 a.m.
Last Modified: May 7, 2026, 2:52 p.m.

Status : Awaiting Analysis

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

More info

Source

[email protected]

CVE-2026-4430