CVE-2021-2447Network attack vector

Authenticated takeover through undisclosed server flaw

Published Jul 20, 2021 · Updated Sep 25, 2024

Unspecified server vulnerability in Oracle Secure Global Desktop 5.6 allows remote authenticated users to take over the service. Oracle has not published the affected server locus or the operation it performs incorrectly on untrusted input. Exploitation requires low-privilege credentials and network access through one of multiple supported protocols, requires no user interaction, and can compromise confidentiality, integrity, and availability beyond the service boundary.

CVSS severity9.9
Critical
EPSS probability1.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unspecified server vulnerability in Oracle Secure Global Desktop 5.6 allows remote authenticated users to take over the service. Oracle has not published the affected server locus or the operation it performs incorrectly on untrusted input. Exploitation requires low-privilege credentials and network access through one of multiple supported protocols, requires no user interaction, and can compromise confidentiality, integrity, and availability beyond the service boundary.

The record

CVE
CVE-2021-2447
Published
Jul 20, 2021
Updated
Sep 25, 2024
Vendor
Oracle Corporation
Product
Oracle Secure Global Desktop
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Oracle Corporation · Oracle Secure Global Desktopversion=5.6

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
9.9Oracle CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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