How severe is CVE-2021-2446?

CVE-2021-2446 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-2446 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-2446?

CVE-2021-2446 affects Oracle Secure Global Desktop. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-2446?

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-2021-2446 published?

CVE-2021-2446 was published on 2021-07-21 and last updated on 2026-06-17.

CVE-2021-2446

CVE-2021-2446 is a critical-severity vulnerability in Oracle Secure Global Desktop with a CVSS 3.x base score of 9.6. 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 9.6)
CVSS v2: 6.8
EPSS exploit prediction: 2% (73rd 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: Client). The supported version that is affected is 5.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Secure Global Desktop. Successful attacks require human interaction from a person other than the attacker and 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 9.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).

Frequently asked questions

What is CVE-2021-2446?: Vulnerability in the Oracle Secure Global Desktop product of Oracle Virtualization (component: Client). The supported version that is affected is 5.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Secure Global Desktop. Successful attacks require human interaction from a person other than the attacker and 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 9.6 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H).
How severe is CVE-2021-2446?: CVE-2021-2446 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-2446 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-2446?: CVE-2021-2446 affects Oracle Secure Global Desktop. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-2446?: 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-2021-2446 published?: CVE-2021-2446 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:*:*:*:*:*:*:*

More vulnerabilities in Oracle Secure Global Desktop

CVE-2021-2248 — Critical (CVSS 10.0): Vulnerability in the Oracle Secure Global Desktop product of Oracle Virtualization (component: Server). The supported…
CVE-2021-2177 — Critical (CVSS 10.0): Vulnerability in the Oracle Secure Global Desktop product of Oracle Virtualization (component: Gateway). The supported…
CVE-2021-2447 — Critical (CVSS 9.9): Vulnerability in the Oracle Secure Global Desktop product of Oracle Virtualization (component: Server). The supported…
CVE-2019-3822 — Critical (CVSS 9.8): libcurl versions from 7.36.0 to before 7.64.0 are vulnerable to a stack-based buffer overflow. The function creating an…
CVE-2017-3167 — Critical (CVSS 9.8): In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, use of the ap_get_basic_auth_pw() by third-party modules…
CVE-2016-3613 — Critical (CVSS 9.8): Unspecified vulnerability in the Oracle Secure Global Desktop component in Oracle Virtualization 4.63, 4.71, and 5.2…

All CVEs affecting Oracle Secure Global Desktop →