CVE-2023-21971Public exploitNetwork attack vector

Authenticated connector crashes and limited data compromise

Published Apr 18, 2023 · Updated Sep 16, 2024

Denial of service and data compromise in Oracle MySQL Connector/J 8.0.32 and earlier allows remote authenticated users to attack via MySQL Protocol. Oracle has not disclosed the affected function or the incorrect operation that processes untrusted protocol data. Exploitation requires high privileges, high attack complexity, and another person's interaction; success can hang or repeatedly crash the connector and permit limited data reads or changes.

CVSS severity5.3
Medium
EPSS probability1.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service and data compromise in Oracle MySQL Connector/J 8.0.32 and earlier allows remote authenticated users to attack via MySQL Protocol. Oracle has not disclosed the affected function or the incorrect operation that processes untrusted protocol data. Exploitation requires high privileges, high attack complexity, and another person's interaction; success can hang or repeatedly crash the connector and permit limited data reads or changes.

The record

CVE
CVE-2023-21971
Published
Apr 18, 2023
Updated
Sep 16, 2024
Vendor
Oracle Corporation
Product
MySQL Connectors
Classifications
T1499.004
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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=8.0.32 and prior

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Oracle Corporation · MySQL Connectorsversion=8.0.32 and prior

Published CVSS scores

5.3Oracle CorporationCVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/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)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

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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