denylist of executable filename extensions possible to bypass under windows
Priority MEDIUM 46CWE-184Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.05043 92nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed LibreOffice (The Document Foundation): 7.1.2, 7.0.5
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| The Document Foundation | LibreOffice | 7.1 to before 7.1.2; 7.0 to before 7.0.5 | 7.1.2, 7.0.5 | Patch available | CNA |
- LibreOffice VendorThe Document Foundation Affected 7.1 to before 7.1.2; 7.0 to before 7.0.5 Fixed in 7.1.2, 7.0.5 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:* | 7.0.0 to before 7.0.5; 7.1.0 to before 7.1.2 | Vulnerable | The Document Foundation |
- cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.0.5; 7.1.0 to before 7.1.2 Vulnerable ·The Document Foundation
Remediation
- Fix · CNA LibreOffice (The Document Foundation) Fixed in 7.1.2, 7.0.5
Timeline
- 2026-10-02 Threatist record created from CVE-2021-25631
- 2026-10-03 Alias added: GHSA-8xj5-7228-hcfg
References
More The Document Foundation Libreoffice vulnerabilities
- TI-2019-07233 LibreLogo global-event script execution CVSS 3.1CRITICAL 9.8
- TI-2018-12068 Path traversal in [UNKNOWN] libreoffice CVSS 3.0CRITICAL 9.8
- TI-2018-07474 An information disclosure vulnerability occurs when LibreOffice 6.0.3 and Apache… CVSS 3.0HIGH 7.5
- TI-2019-07230 Code injection in Document Foundation LibreOffice CVSS 3.1CRITICAL 9.8
- TI-2018-05018 LibreOffice before 5.4.5 and 6.x before 6.0.1 allows remote attackers to read arbitrary… CVSS 3.0CRITICAL 9.8
- TI-2023-01118 Arbitrary file write in libreoffice CVSS 3.1MEDIUM 5.5
Sources
- CVE-2021-25631 · CVE Program
- CVE-2021-25631 · NVD
- FIRST EPSS
- GHSA-8xj5-7228-hcfg · GitHub Advisory Database · CC BY 4.0
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