How severe is CVE-2021-2447?

CVE-2021-2447 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-2447 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-2447?

CVE-2021-2447 affects Oracle Secure Global Desktop. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-2447?

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

When was CVE-2021-2447 published?

CVE-2021-2447 was published on 2021-07-21 and last updated on 2026-06-17.

CVE-2021-2447

CVE-2021-2447 is a critical-severity vulnerability in Oracle Secure Global Desktop with a CVSS 3.x base score of 9.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.9)
CVSS v2: 6.5
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Oracle Secure Global Desktop
Published: 2021-07-21
Last modified: 2026-06-17

Description

Vulnerability in the Oracle Secure Global Desktop product of Oracle Virtualization (component: Server). The supported version that is affected is 5.6. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise Oracle Secure Global Desktop. While the vulnerability is in Oracle Secure Global Desktop, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle Secure Global Desktop. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

Frequently asked questions

What is CVE-2021-2447?: Vulnerability in the Oracle Secure Global Desktop product of Oracle Virtualization (component: Server). The supported version that is affected is 5.6. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise Oracle Secure Global Desktop. While the vulnerability is in Oracle Secure Global Desktop, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle Secure Global Desktop. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
How severe is CVE-2021-2447?: CVE-2021-2447 has a CVSS 3.x base score of 9.9, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-2447 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-2447?: CVE-2021-2447 affects Oracle Secure Global Desktop. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-2447?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-2447 published?: CVE-2021-2447 was published on 2021-07-21 and last updated on 2026-06-17.

References

https://www.oracle.com/security-alerts/cpujul2021.html

Affected products (1)

cpe:2.3:a:oracle:secure_global_desktop:5.6:*:*:*:*:*:*:*

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