How severe is CVE-2021-28129?

CVE-2021-28129 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-28129 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28129?

CVE-2021-28129 affects Apache Openoffice. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28129?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-28129 published?

CVE-2021-28129 was published on 2021-10-07 and last updated on 2026-06-17.

CVE-2021-28129

CVE-2021-28129 is a high-severity vulnerability in Apache Openoffice with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-284.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Apache Openoffice
Published: 2021-10-07
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2021-28129?: 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.
How severe is CVE-2021-28129?: CVE-2021-28129 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-28129 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28129?: CVE-2021-28129 affects Apache Openoffice. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28129?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-28129 published?: CVE-2021-28129 was published on 2021-10-07 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:openoffice:4.1.8:*:*:*:*:*:*:*

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