CVE-2021-25631
highpriority · track · 37EPSS 0.050 · 92 %ileEURUUSEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (11)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://nvd.nist.gov/vuln/detail/CVE-2021-25631cnnvd
- https://positive.security/blog/url-open-rce#open-libreofficecnnvd
- https://vigilance.fr/vulnerability/LibreOffice-code-execution-via-Windows-Filename-Extensions-Denylist-Bypass-35100cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021041607cnnvd
- https://www.libreoffice.org/about-us/security/advisories/cve-2021-25631/cnnvd
- https://positive.security/blog/url-open-rce#open-libreofficeenisa_euvd
- https://www.libreoffice.org/about-us/security/advisories/cve-2021-25631/enisa_euvd
- https://positive.security/blog/url-open-rce#open-libreofficeExploitThird Party Advisorynvd
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