What is CVE-2021-41830?

CVE-2021-41830 is a high-severity vulnerability in Apache Openoffice, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2021-10-11.

How severe is CVE-2021-41830?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Apache Openoffice

CVE-2021-41830

It is possible for an attacker to manipulate signed documents and macros to appear to come from a trusted source. All versions of Apache OpenOffice up to 4.1.10 are affected. Users are advised to update to version 4.1.11. See CVE-2021-25633 for the LibreOffice advisory.

Published 2021-10-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.014 (71.2th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 71st percentile — 71.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Apache Openoffice
Apache Software Foundation Openoffice — versions Apache OpenOffice, OpenOffice.org

Weakness classification (CWE)

CWE-347 — Improper Verification of Cryptographic Signature

References

lists.apache.org/thread.html/r97d287c88881aa581f1b18cb01e2cbedc4e6eae85958491ac… (Mailing List, Vendor Advisory)
lists.apache.org/thread.html/raaab8a3b91f8d7b7ba14f873b8d0fd13952c823acc3385b7a… (mailing-list)

Frequently asked questions

What is CVE-2021-41830?: CVE-2021-41830 is a high-severity vulnerability in Apache Openoffice, classified under Improper Verification of Cryptographic Signature. CVSS score: 7.5/10. Published 2021-10-11.
How severe is CVE-2021-41830?: High severity. CVSS v3 base score is 7.5 out of 10.