How severe is CVE-2021-22907?

CVE-2021-22907 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-2021-22907 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22907?

CVE-2021-22907 primarily affects Citrix Workspace. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22907?

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-2021-22907 published?

CVE-2021-22907 was published on 2021-05-27 and last updated on 2026-06-17.

CVE-2021-22907

CVE-2021-22907 is a high-severity vulnerability in Citrix Workspace 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-284.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (15th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-284
Affected product: Citrix Workspace
Published: 2021-05-27
Last modified: 2026-06-17

Description

An improper access control vulnerability exists in Citrix Workspace App for Windows potentially allows privilege escalation in CR versions prior to 2105 and 1912 LTSR prior to CU4.

Frequently asked questions

What is CVE-2021-22907?: An improper access control vulnerability exists in Citrix Workspace App for Windows potentially allows privilege escalation in CR versions prior to 2105 and 1912 LTSR prior to CU4.
How severe is CVE-2021-22907?: CVE-2021-22907 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-2021-22907 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (15th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22907?: CVE-2021-22907 primarily affects Citrix Workspace. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22907?: 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-2021-22907 published?: CVE-2021-22907 was published on 2021-05-27 and last updated on 2026-06-17.

References

https://support.citrix.com/article/CTX307794

Affected products (2)

cpe:2.3:a:citrix:workspace:*:*:*:*:ltsr:windows:*:*
cpe:2.3:a:citrix:workspace:*:*:*:*:-:windows:*:*

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