CVE-2021-41560
OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an...
OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.
- Record
CVE-2021-41560- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-434
- Updated
- 2026-11-02
CVE List No score
OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.
- Record
CVE-2021-41560- Updated
- 2026-11-02
EUVDEUVD-2021-28577 No score
OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.
- Record
EUVD-2021-28577- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-c9rc-7w87-3h5x No score
OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an...
OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.
- Record
GHSA-c9rc-7w87-3h5x- Weakness
- CWE-434
- Updated
- 2026-11-02
OSV
OpenCATS through 0.9.6 allows remote attackers to execute arbitrary code by uploading an executable file via lib/FileUtility.php.
- Record
CVE-2021-41560- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/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 | Nickguitar/RevCAT | 2021-11-10 |
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-2021-41560 is a critical vulnerability (CVSS 9.8) in Opencats, published December 15, 2021. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 11.3%, the 96th percentile. No source names a fixed version.