How severe is CVE-2021-28628?

CVE-2021-28628 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2021-28628 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28628?

CVE-2021-28628 affects Adobe Experience Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28628?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-28628 published?

CVE-2021-28628 was published on 2021-08-24 and last updated on 2026-06-17.

CVE-2021-28628

CVE-2021-28628 is a medium-severity vulnerability in Adobe Experience Manager with a CVSS 3.x base score of 6.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 4.3
EPSS exploit prediction: 1% (60th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Adobe Experience Manager
Published: 2021-08-24
Last modified: 2026-06-17

Description

Adobe Experience Manager Cloud Service offering, as well as versions 6.5.8.0 (and below) is affected by a 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.

Frequently asked questions

What is CVE-2021-28628?: Adobe Experience Manager Cloud Service offering, as well as versions 6.5.8.0 (and below) is affected by a 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.
How severe is CVE-2021-28628?: CVE-2021-28628 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2021-28628 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (60th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28628?: CVE-2021-28628 affects Adobe Experience Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28628?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-28628 published?: CVE-2021-28628 was published on 2021-08-24 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/experience-manager/apsb21-39.html

Affected products (1)

cpe:2.3:a:adobe:experience_manager:*:*:*:*:aem_cloud_service:*:*:*

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