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TI-2021-04188 Aliases CVE-2021-21083GHSA-mg45-vhfv-wcj4

Adobe Experience Manager broken access control in DSRPReindexServlet could lead to denial-of-service

Priority LOW 37CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

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.

Why it matters now

EPSS 0.0198 80th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
AdobeExperience Managerup to 6.3.3.8; up to 6.4.8.3; up to 6.5.7.0; up to AEM Cloud Service—No fix listedCNA
  • Experience Manager VendorAdobe Affected up to 6.3.3.8; up to 6.4.8.3; up to 6.5.7.0; up to AEM Cloud Service Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:adobe:experience_manager:*:*:*:*:*:*:*:*up to 6.3.3.8; 6.4.0.0 to before 6.4.8.4; 6.5.0.0 to before 6.5.8.0VulnerableAdobe
cpe:2.3:a:adobe:experience_manager_cloud_service:-:*:*:*:*:*:*:*not specified by NVDVulnerableAdobe
  • cpe:2.3:a:adobe:experience_manager:*:*:*:*:*:*:*:* Versions up to 6.3.3.8; 6.4.0.0 to before 6.4.8.4; 6.5.0.0 to before 6.5.8.0 Vulnerable ·Adobe
  • cpe:2.3:a:adobe:experience_manager_cloud_service:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Adobe

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21083
  2. 2026-10-03 Alias added: GHSA-mg45-vhfv-wcj4

References

Advisory 1

  • TI-2025-31549 Adobe Experience Manager (MS) | Deserialization of Untrusted Data (CWE-502) CVSS 3.1CRITICAL 9.8
  • TI-2018-03574 Server-side request forgery in Adobe Experience Manager AEM 6.4 and earlier CVSS 3.0HIGH 7.5
  • TI-2016-00865 Dispatcher before 4.1.5 in Adobe Experience Manager 5.6.1, 6.0.0, and 6.1.0 does not… CVSS 3.0HIGH 7.5
  • TI-2016-00864 The Servlets Post component 2.3.6 in Apache Sling, as used in Adobe Experience Manager… CVSS 3.0HIGH 7.5
  • TI-2019-05642 Adobe Experience Manager versions 6.5, and 6.4 have an authentication bypass… CVSS 3.0CRITICAL 9.8
  • TI-2019-05759 XML external entity injection in Adobe Experience Manager CVSS 3.1HIGH 7.5
See all 1298 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences