CVE-2026-59265highCWE-426

CVE-2026-59265: high-severity vulnerability in Apache OpenOffice

Apache OpenOffice, Apache OpenOffice: Opening a malicious document can lead to system takeover

Published · Updated

41Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 8.8epss 0.4%
from disclosure to weapon4 days
Published on NVDOct 2
1st PoC+4d
exploitation probability
0.4%top 65% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Apache Software Foundation · Apache OpenOffice
public PoCs found — 1
githubgithub.com/HORKimhab/CVE-2026-59265★ 0
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Apache OpenOffice

In the same product, most dangerous first.

CVE-2021-33035—Buffer overflow from a crafted DBF fileEPSS 50.6%CVE-2021-30245—Code execution in Apache OpenOffice via non-http(s) schemes in HyperlinksEPSS 4.9%CVE-2021-40439—Billion LaughsEPSS 3.9%CVE-2017-3157—CVE-2017-3157EPSS 3.1%CVE-2016-6804—CVE-2016-6804EPSS 3.0%CVE-2017-12608—CVE-2017-12608EPSS 2.9%
References
https://github.com/apache/openoffice/commit/95923fd437e06edd38a4f0e139a27c755a6f3ba6.patchhttps://github.com/apache/openoffice/commit/c699bed3f75e79bd64ddec9dec49f9e210eed281.patchhttps://lists.apache.org/thread.html/svfdc1jtpqlw7mo6lgg9fthcmf754pl5http://www.openwall.com/lists/oss-security/2026/10/02/2http://www.openwall.com/lists/oss-security/2026/10/08/7