CVE-2023-21893Network attack vector

Unauthenticated takeover through TCPS

Published Jan 17, 2023 · Updated Sep 17, 2024

Unspecified flaw in Oracle Data Provider for .NET 19c and 21c allows remote attackers to take over the provider through TCPS. Oracle has not disclosed the affected code path or the operation it performs incorrectly on network input. Exploitation requires no credentials and interaction by a person other than the attacker; success compromises the provider's data and operation.

CVSS severity7.5
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unspecified flaw in Oracle Data Provider for .NET 19c and 21c allows remote attackers to take over the provider through TCPS. Oracle has not disclosed the affected code path or the operation it performs incorrectly on network input. Exploitation requires no credentials and interaction by a person other than the attacker; success compromises the provider's data and operation.

The record

CVE
CVE-2023-21893
Published
Jan 17, 2023
Updated
Sep 17, 2024
Vendor
Oracle Corporation
Product
Oracle Data Provider for .NET
Classifications
CWE-284, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 17, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=19c
  2. Affected versionversion=21c

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · Oracle Data Provider for .NETversion=19c; version=21c

Published CVSS scores

7.5Oracle CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1203Exploitation for Client Execution

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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