Heap Buffer Overflow in AgileEngine

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Summary

CVECVE-2026-4430
StatePUBLISHED
AssignerDocument Fdn.
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-07 08:16:00 UTC
Updated2026-05-07 08:16:00 UTC
DescriptionOut-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.

Risk And Classification

Primary CVSS: v4.0 5.4 MEDIUM from [email protected]

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

Problem Types: CWE-787 | CWE-787 CWE-787 Out-of-bounds write

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary5.4MEDIUMCVSS: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/C...
4.0CNACVSS5.4MEDIUMCVSS: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 v4.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
Confidentiality
Low
Integrity
Low
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA The Document Foundation LibreOffice affected 26.2 26.2.3 26 series Not specified
CNA The Document Foundation LibreOffice affected 25.8 25.8.7 25 series Not specified

References

ReferenceSourceLinkTags
www.libreoffice.org/about-us/security/advisories/cve-2026-4430 [email protected] www.libreoffice.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Duc Anh Nguyen (@Danzation) (en)

CNA: Caolán McNamara <[email protected]> (en)

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