How severe is CVE-2021-21078?

CVE-2021-21078 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-21078 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21078?

CVE-2021-21078 affects Adobe Creative Cloud Desktop Application. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-21078?

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

When was CVE-2021-21078 published?

CVE-2021-21078 was published on 2021-03-12 and last updated on 2026-06-17.

CVE-2021-21078

CVE-2021-21078 is a medium-severity vulnerability in Adobe Creative Cloud Desktop Application with a CVSS 3.x base score of 6.5. 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-426.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.4
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-426
Affected product: Adobe Creative Cloud Desktop Application
Published: 2021-03-12
Last modified: 2026-06-17

Description

Adobe Creative Cloud Desktop Application version 5.3 (and earlier) is affected by an Unquoted Service Path vulnerability in CCXProcess that could allow an attacker to achieve arbitrary code execution in the process of the current user. Exploitation of this issue requires user interaction

Frequently asked questions

What is CVE-2021-21078?: Adobe Creative Cloud Desktop Application version 5.3 (and earlier) is affected by an Unquoted Service Path vulnerability in CCXProcess that could allow an attacker to achieve arbitrary code execution in the process of the current user. Exploitation of this issue requires user interaction
How severe is CVE-2021-21078?: CVE-2021-21078 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-21078 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21078?: CVE-2021-21078 affects Adobe Creative Cloud Desktop Application. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-21078?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-21078 published?: CVE-2021-21078 was published on 2021-03-12 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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