How severe is CVE-2021-28626?

CVE-2021-28626 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2021-28626 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28626?

CVE-2021-28626 affects Adobe Experience Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28626?

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

When was CVE-2021-28626 published?

CVE-2021-28626 was published on 2021-08-24 and last updated on 2026-06-17.

CVE-2021-28626

CVE-2021-28626 is a low-severity vulnerability in Adobe Experience Manager with a CVSS 3.x base score of 3.7. 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-285.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
CVSS v2: 5.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-285
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 an Improper Authorization vulnerability allowing users to create nodes under a location. An unauthenticated attacker could leverage this vulnerability to cause an application denial-of-service. Exploitation of this issue does not require user interaction.

Frequently asked questions

What is CVE-2021-28626?: Adobe Experience Manager Cloud Service offering, as well as versions 6.5.8.0 (and below) is affected by an Improper Authorization vulnerability allowing users to create nodes under a location. An unauthenticated attacker could leverage this vulnerability to cause an application denial-of-service. Exploitation of this issue does not require user interaction.
How severe is CVE-2021-28626?: CVE-2021-28626 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2021-28626 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28626?: CVE-2021-28626 affects Adobe Experience Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28626?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-28626 published?: CVE-2021-28626 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:*:*:*:*:*:*:*:*

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Other CWE-285 (Improper Authorization) vulnerabilities

CVE-2025-65041 — Critical (CVSS 10.0): Improper authorization in Microsoft Partner Center allows an unauthorized attacker to elevate privileges over a network.
CVE-2023-33189 — Critical (CVSS 10.0): Pomerium is an identity and context-aware access proxy. With specially crafted requests, incorrect authorization…
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CVE-2026-5412 — Critical (CVSS 9.9): In Juju versions prior to 2.9.57 and 3.6.21, an authorization issue exists in the Controller facade. An authenticated…

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