CVE-2021-21084 json
Adobe Experience Manager stored cross-site scripting vulnerability in resource resolver factory could lead to arbitrary code execution
published 2021-06-28 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8475
- cvss
- 7.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
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 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.
Patch / fix
- adobe experience_manager 6.4.8.4, 6.5.8.0
Exploit prediction
1.82% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Affected products
- Adobe Experience Manager
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
helpx.adobe.com
/security/products/experience-manager/apsb21-15.html
release-notes, vendor-advisory
Sources
- CVE List CVE-2021-21084
- NVD CVE-2021-21084
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