CVE-2021-35599

Migration-component takeover by high-privileged local users

Published Oct 20, 2021 · Updated Sep 25, 2024

Local privilege abuse in Oracle Database 21c allows high-privileged local users to take over Zero Downtime DB Migration to Cloud. Oracle identifies the affected migration component but has not published the flawed operation or the input that reaches it. Exploitation requires a high-privileged local logon on the Linux service host; successful attacks can control the migration component and significantly affect other products.

CVSS severity8.2
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Local privilege abuse in Oracle Database 21c allows high-privileged local users to take over Zero Downtime DB Migration to Cloud. Oracle identifies the affected migration component but has not published the flawed operation or the input that reaches it. Exploitation requires a high-privileged local logon on the Linux service host; successful attacks can control the migration component and significantly affect other products.

The record

CVE
CVE-2021-35599
Published
Oct 20, 2021
Updated
Sep 25, 2024
Vendor
Oracle Corporation
Product
Oracle Database
Classifications
T1072
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 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=21c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Oracle Corporation · Oracle Databaseversion=21c

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
8.2OracleCVSS:3.1/AV:L/AC:L/PR:H/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1072Software Deployment Tools

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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