CVE-2026-4430 PUBLISHED

Heap Buffer Overflow in AgileEngine

Assigner: Document Fdn.
Reserved: 19.03.2026 Published: 07.05.2026 Updated: 07.05.2026

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.

CVSS Vector: 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
CVSS Score: 5.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

Vendor	The Document Foundation
Product	LibreOffice
Versions	Default: unaffected affected from 26.2 to 26.2.3 (excl.) affected from 25.8 to 25.8.7 (excl.)