Medium severity · published Jun 28, 2021
CVE-2021-21084
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 a stored Cross-Site Scripting (XSS)…
6.1
CVSS
1.8%
EPSS
No
On KEV
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 a stored Cross-Site Scripting (XSS) vulnerability that could be abused by an attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EM
Experience Manager · Adobe
through 6.3.3.8; 6.4.0.0 before 6.4.8.4; 6.5.0.0 before 6.5.8.0 · source: NVD
EM
Experience Manager Cloud Service · Adobe
All versions, or not specified · source: NVD
Affected product
EM
Experience Manager
Adobe
More from Experience Manager
9.9
CVE-2026-105895
Adobe Experience Manager | Improper Input Validation (CWE-20)
9.9
CVE-2026-19232
Adobe Experience Manager | Incorrect Authorization (CWE-863)
9.8
CVE-2025-49533
Adobe Experience Manager (MS) | Deserialization of Untrusted Data (CWE-502)
9.8
CVE-2024-26029
Adobe Experience Manager | Improper Access Control (CWE-284)
9.8
CVE-2021-40722
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…