CVE-2021-2000Network attack vector

Audit-data manipulation via undisclosed Unified Audit flaw

Published Jan 20, 2021 · Updated Sep 26, 2024

Integrity flaw in Unified Audit in Oracle Database 12.1.0.2, 12.2.0.1, 18c, and 19c allows remote authenticated users to alter audit data. Oracle has not published the flawed operation or input handling within the Unified Audit component. Exploitation requires a SYS account, Oracle Net access, and interaction by another person; the reported consequence is limited to inserting, updating, or deleting some audit data.

CVSS severity2.4
Low
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integrity flaw in Unified Audit in Oracle Database 12.1.0.2, 12.2.0.1, 18c, and 19c allows remote authenticated users to alter audit data. Oracle has not published the flawed operation or input handling within the Unified Audit component. Exploitation requires a SYS account, Oracle Net access, and interaction by another person; the reported consequence is limited to inserting, updating, or deleting some audit data.

The record

CVE
CVE-2021-2000
Published
Jan 20, 2021
Updated
Sep 26, 2024
Vendor
Oracle Corporation
Product
Oracle Database
Classifications
T1565.001
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 20, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 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=12.1.0.2
  2. Affected versionversion=12.2.0.1
  3. Affected versionversion=18c
  4. Affected versionversion=19c

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle Corporation · Oracle Databaseversion=12.1.0.2; version=12.2.0.1; version=18c; version=19c

Published CVSS scores

3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N
2.4OracleCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:L/A:N

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

Weakness, pattern, technique

T1565.001Stored Data Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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