CVE-2025-63916

CVSS 8.1 HIGHEPSS 1.4%CWE-78

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.1EPSS 1.4%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

17 Nov 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

MyScreenTools v2.2.1.0 contains a critical OS command injection vulnerability in the GIF compression tool. The application fails to properly sanitize user-supplied file paths before passing them to cmd.exe, allowing attackers to execute arbitrary system commands with the privileges of the user running the application. The vulnerability exists in the CMD() function within GIFSicleTool\Form_gif_sicle_tool.cs, which constructs shell commands by concatenating unsanitized user input (file paths) and executes them via cmd.exe.

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

Affected products

n/a · n/a

References

https://github.com/cydtseng/Vulnerability-Research/blob/main/myscreentools/OSCommandInjection-GifCompression.md https://github.com/luotengyuan/MyScreenTools/blob/master/GIFSicleTool/Form_gif_sicle_tool.cs https://github.com/luotengyuan/MyScreenTools/tree/master