CVE-2021-28129

Name: CVE-2021-28129
Creator: NVD / NIST
Published: 2021-10-07T16:15:08.203+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.55%

Last modified Jun 17, 2026

CVE-2021-28129 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. While working on Apache OpenOffice 4.1.8 a developer discovered that the DEB package did not install using root, but instead used a userid and groupid of 500. This both caused issues with desktop integration and could allow a crafted attack on files owned by that user or group if they exist. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

While working on Apache OpenOffice 4.1.8 a developer discovered that the DEB package did not install using root, but instead used a userid and groupid of 500. This both caused issues with desktop integration and could allow a crafted attack on files owned by that user or group if they exist. Users who installed the Apache OpenOffice 4.1.8 DEB packaging should upgrade to the latest version of Apache OpenOffice.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.55%

41.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Apache	Openoffice	4.1.8

References

http://www.openwall.com/lists/oss-security/2021/10/07/5Mailing List, Third Party Advisory
https://lists.apache.org/thread.html/r9e72234dd662280fa1a3cca6164d3470a1dbc0d8e53e48ba27f787ce%40%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/rc9090ab48b4699494b63b35cd6d7414c52d665ecae12add3cdc56c9b%40%3Cusers.openoffice.apache.org%3EMailing List, Vendor Advisory
https://lists.apache.org/thread.html/rc9090ab48b4699494b63b35cd6d7414c52d665ecae12add3cdc56c9b%40%3Cusers.openoffice.apache.org%3EMailing List, Vendor Advisory
https://lists.apache.org/thread.html/rc9090ab48b4699494b63b35cd6d7414c52d665ecae12add3cdc56c9b%40%3Cusers.openoffice.apache.org%3EMailing List, Vendor Advisory
https://lists.apache.org/thread.html/rc9090ab48b4699494b63b35cd6d7414c52d665ecae12add3cdc56c9b%40%3Cusers.openoffice.apache.org%3EMailing List, Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/10/07/5Mailing List, Third Party Advisory
https://lists.apache.org/thread.html/r9e72234dd662280fa1a3cca6164d3470a1dbc0d8e53e48ba27f787ce%40%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/rc9090ab48b4699494b63b35cd6d7414c52d665ecae12add3cdc56c9b%40%3Cusers.openoffice.apache.org%3EMailing List, Vendor Advisory
https://lists.apache.org/thread.html/rc9090ab48b4699494b63b35cd6d7414c52d665ecae12add3cdc56c9b%40%3Cusers.openoffice.apache.org%3EMailing List, Vendor Advisory
https://lists.apache.org/thread.html/rc9090ab48b4699494b63b35cd6d7414c52d665ecae12add3cdc56c9b%40%3Cusers.openoffice.apache.org%3EMailing List, Vendor Advisory
https://lists.apache.org/thread.html/rc9090ab48b4699494b63b35cd6d7414c52d665ecae12add3cdc56c9b%40%3Cusers.openoffice.apache.org%3EMailing List, Vendor Advisory

Timeline

Published: Oct 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-28129?

How severe is CVE-2021-28129?

CVE-2021-28129 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.

How do I fix CVE-2021-28129?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-28129?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST