CVE-2020-2512Network attack vector

Unauthenticated hang or crash via OracleNet

Published Jan 15, 2020 · Updated Sep 30, 2024

Oracle Database Gateway for ODBC 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c, and 19c allows remote attackers to cause a hang or crash. Oracle identifies OracleNet as the attack path but has not published the malformed operation, input field, or code locus that triggers the failure. No authentication or user interaction is required, but attack complexity is high; successful exploitation interrupts only the gateway service and does not expose or alter data.

CVSS severity5.9
Medium
EPSS probability1.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Oracle Database Gateway for ODBC 11.2.0.4, 12.1.0.2, 12.2.0.1, 18c, and 19c allows remote attackers to cause a hang or crash. Oracle identifies OracleNet as the attack path but has not published the malformed operation, input field, or code locus that triggers the failure. No authentication or user interaction is required, but attack complexity is high; successful exploitation interrupts only the gateway service and does not expose or alter data.

The record

CVE
CVE-2020-2512
Published
Jan 15, 2020
Updated
Sep 30, 2024
Vendor
Oracle Corporation
Product
Oracle Database
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

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=11.2.0.4
  2. Affected versionversion=12.1.0.2
  3. Affected versionversion=12.2.0.1
  4. Affected versionversion=18c
  5. Affected versionversion=19c

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle Databaseversion=11.2.0.4; version=12.1.0.2; version=12.2.0.1; version=18c; version=19c

Published CVSS scores

5.9Oracle CorporationCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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