High severity · published Oct 2, 2026
CVE-2026-59265
Apache OpenOffice, Apache OpenOffice: Opening a malicious document can lead to system takeover
8.8
CVSS
0.6%
EPSS
No
On KEV
Description
A code execution issue in the Java integration in Apache OpenOffice v4.1.16 and earlier allows a crafted untrusted document to trigger executing arbitrary (even remote) code when opened by the user.
This issue is expected to be fixed in version 4.1.17, which is in the release candidate phase.
Until then, users can mitigate this issue by disabling Java runtime integration in the Preferences dialog. This prevents the attack. If this is not possible, or as an extra precaution, you can avoid opening open untrusted files entirely. Once 4.1.17 is released, upgrade to that version to fix the issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 48% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AO
Apache OpenOffice · Apache Software Foundation
through 4.1.16; before 95923fd437e06edd38a4f0e139a27c755a6f3ba6; before 181421139242694b309751fb666406eddc203c50 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59265
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59265
patch
https://github.com/apache/openoffice/commit/c699bed3f75e79bd64ddec9dec49f9e210eed281.patch
patch
https://github.com/apache/openoffice/commit/95923fd437e06edd38a4f0e139a27c755a6f3ba6.patch
vendor-advisory
https://lists.apache.org/thread.html/svfdc1jtpqlw7mo6lgg9fthcmf754pl5
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