Cyber Resilience

CVE-2021-40722

Critical

Published: 13 January 2022

Published
13 January 2022
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0103 77.8th percentile
Risk Priority 20 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-40722 is a critical-severity Improper Restriction of XML External Entity Reference (CWE-611) vulnerability in Adobe Experience Manager. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 22.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

AEM Forms Cloud Service offering, as well as version 6.5.10.0 (and below) are affected by an XML External Entity (XXE) injection vulnerability that could be abused by an attacker to achieve RCE.

CWE(s)
CWE-611

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

adobe
experience manager
≤ 6.5.10.0
adobe
experience manager cloud service
all versions

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-611

Penetration testing includes XML external entity payloads, detecting XXE vulnerabilities and enabling their mitigation.

SI-4 System Monitoring
addresses: CWE-611

Identifies XML external entity processing via monitoring of unusual file/network access or resource usage.

References