CVE-2020-2527Network attack vector

Authenticated data disclosure via undisclosed Core RDBMS flaw

Published Jan 15, 2020 · Updated Sep 30, 2024

Information disclosure in Oracle Database 12.1.0.2, 12.2.0.1, 18c, and 19c allows remote authenticated users to read Core RDBMS data. Oracle has not disclosed the defective Core RDBMS operation or how OracleNet input reaches the unauthorized read. Exploitation requires network access plus high-privilege Create Index and Create Table rights, and exposure is limited to a subset of accessible Core RDBMS data.

CVSS severity4.1
Medium
EPSS probability0.98%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Oracle Database 12.1.0.2, 12.2.0.1, 18c, and 19c allows remote authenticated users to read Core RDBMS data. Oracle has not disclosed the defective Core RDBMS operation or how OracleNet input reaches the unauthorized read. Exploitation requires network access plus high-privilege Create Index and Create Table rights, and exposure is limited to a subset of accessible Core RDBMS data.

The record

CVE
CVE-2020-2527
Published
Jan 15, 2020
Updated
Sep 30, 2024
Vendor
Oracle Corporation
Product
Oracle Database
Classifications
T1210
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 30, 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

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.1Oracle CorporationCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N
4.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/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

T1210Exploitation of Remote Services

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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