CVE-2021-39273
In XeroSecurity Sn1per 9.0 (free version), insecure permissions (0777) are set upon application...
In XeroSecurity Sn1per 9.0 (free version), insecure permissions (0777) are set upon application execution, allowing an unprivileged user to modify the application, modules, and configuration files. This leads to arbitrary code execution with root privileges.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
In XeroSecurity Sn1per 9.0 (free version), insecure permissions (0777) are set upon application execution, allowing an unprivileged user to modify the application, modules, and configuration files. This leads to arbitrary code execution with root privileges.
- Record
CVE-2021-39273- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.0 High
AV:N/AC:L/Au:S/C:C/I:C/A:C - Weakness
- CWE-276
- Updated
- 2026-11-02
CVE List No score
In XeroSecurity Sn1per 9.0 (free version), insecure permissions (0777) are set upon application execution, allowing an unprivileged user to modify the application, modules, and configuration files. This leads to arbitrary code execution with root privileges.
- Record
CVE-2021-39273- Updated
- 2026-11-02
EUVDEUVD-2021-25635 No score
In XeroSecurity Sn1per 9.0 (free version), insecure permissions (0777) are set upon application execution, allowing an unprivileged user to modify the application, modules, and configuration files. This leads to arbitrary code execution with root privileges.
- Record
EUVD-2021-25635- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-6h4h-9xp4-x824 No score
In XeroSecurity Sn1per 9.0 (free version), insecure permissions (0777) are set upon application...
In XeroSecurity Sn1per 9.0 (free version), insecure permissions (0777) are set upon application execution, allowing an unprivileged user to modify the application, modules, and configuration files. This leads to arbitrary code execution with root privileges.
- Record
GHSA-6h4h-9xp4-x824- Weakness
- CWE-276
- Updated
- 2026-11-02
OSV
In XeroSecurity Sn1per 9.0 (free version), insecure permissions (0777) are set upon application execution, allowing an unprivileged user to modify the application, modules, and configuration files. This leads to arbitrary code execution with root privileges.
- Record
CVE-2021-39273- CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | nikip72/CVE-2021-39273-CVE-2021-39274 | 2021-08-17 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-39273 is a high vulnerability (CVSS 8.8) in Xerosecurity Sn1per, published August 19, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 2.67%, the 85th percentile. No source names a fixed version.