What is the CVSS score of CVE-2025-64403?

CVE-2025-64403 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.0%.

Which versions of Openoffice are affected by CVE-2025-64403?

CVE-2025-64403 presents notable security risk, a missing authorization vulnerability rated CVSS 8.1.

How to fix or mitigate CVE-2025-64403?

Within 30 days: Identify all affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Openoffice CVE-2025-64403

HIGH

Missing Authorization (CWE-862)

2025-11-12 security@apache.org

Authentication Bypass Apache Openoffice

8.1

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:21 vuln.today

CVE Published

Nov 12, 2025 - 09:15 nvd

HIGH 8.1

DescriptionNVD

Apache OpenOffice Calc spreadsheet can contain links to other files, in the form of "external data sources". A missing Authorization vulnerability in Apache OpenOffice allowed an attacker to craft a document that would cause such links to be loaded without prompt.

This issue affects Apache OpenOffice: through 4.1.15.

Users are recommended to upgrade to version 4.1.16, which fixes the issue.

AnalysisAI

Apache OpenOffice Calc spreadsheet can contain links to other files, in the form of "external data sources". Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Missing Authorization (CWE-862), which allows attackers to access resources or perform actions without proper authorization checks. Apache OpenOffice Calc spreadsheet can contain links to other files, in the form of "external data sources". A missing Authorization vulnerability in Apache OpenOffice allowed an attacker to craft a document that would cause such links to be loaded without prompt.1.15. Users are recommended to upgrade to version 4.1.16, which fixes the issue. Affected products include: Apache Openoffice. Version information: through 4.1.15..

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement role-based access control, validate authorization on every request server-side, apply principle of least privilege.

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CVE-2025-64403 vulnerability details – vuln.today

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