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Vulnerability record · CVE-2021-25631 · published 3 May 2021

CVE-2021-25631: Libreoffice vulnerability

Libreoffice · Libreoffice

In the LibreOffice 7-1 series in versions prior to 7.1.2, and in the 7-0 series in versions prior to 7.0.5, the denylist can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type.

8.8 CVSS 3.1 High EPSS 5.0% · top 8.0% CWE-184 · CWE-184
8.8CVSS 3.1 base score, v2 9.3
5.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

In the LibreOffice 7-1 series in versions prior to 7.1.2, and in the 7-0 series in versions prior to 7.0.5, the denylist can be circumvented by manipulating the link so it doesn't match the denylist but results in ShellExecute attempting to launch an executable type.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://positive.security/blog/url-open-rce#open-libreoffice ExploitThird Party Advisory
https://www.libreoffice.org/about-us/security/advisories/cve-2021-25631/ Vendor Advisory
https://positive.security/blog/url-open-rce#open-libreoffice ExploitThird Party Advisory
https://www.libreoffice.org/about-us/security/advisories/cve-2021-25631/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-25631), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.