How severe is CVE-2021-28547?

CVE-2021-28547 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-28547 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-28547?

CVE-2021-28547 affects Adobe Creative Cloud Desktop Application. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-28547?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-28547 published?

CVE-2021-28547 was published on 2021-09-29 and last updated on 2026-06-17.

CVE-2021-28547

CVE-2021-28547 is a high-severity vulnerability in Adobe Creative Cloud Desktop Application with a CVSS 3.x base score of 7.8. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Adobe Creative Cloud Desktop Application
Published: 2021-09-29
Last modified: 2026-06-17

Description

Adobe Creative Cloud Desktop Application for macOS version 5.3 (and earlier) is affected by a privilege escalation vulnerability that could allow a normal user to delete the OOBE directory and get permissions of any directory under the administrator authority.

Frequently asked questions

What is CVE-2021-28547?: Adobe Creative Cloud Desktop Application for macOS version 5.3 (and earlier) is affected by a privilege escalation vulnerability that could allow a normal user to delete the OOBE directory and get permissions of any directory under the administrator authority.
How severe is CVE-2021-28547?: CVE-2021-28547 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-28547 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-28547?: CVE-2021-28547 affects Adobe Creative Cloud Desktop Application. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-28547?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-28547 published?: CVE-2021-28547 was published on 2021-09-29 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/creative-cloud/apsb21-18.html

Affected products (1)

cpe:2.3:a:adobe:creative_cloud_desktop_application:*:*:*:*:*:*:*:*

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