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Public proof of concept

CVE-2025-63916

A public proof of concept exists; no exploitation attested.

  • Published2025-11-17
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2025-11-1716:15CVE publishedNVD

Versions per branch

NVD
Luotengyuan myscreentools
BranchAffectedFixed in
2.2≤ 2.2.1.0no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Published
2025-11-17
Last Modified
2026-11-05
NVD status
Analyzed
GitHub Advisory
GHSA-6jrg-fg6f-m23w

Frequently asked questions

What is CVE-2025-63916?

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.

Is CVE-2025-63916 actively exploited?

A proof-of-concept exploit exists for CVE-2025-63916, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-63916?

CVE-2025-63916 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

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