CVE-2024-21090Network attack vector

Unauthenticated client hang or repeated crash

Published Apr 16, 2024 · Updated Mar 27, 2025

Denial of service in Oracle MySQL Connector/Python 8.3.0 and earlier allows remote attackers to hang or repeatedly crash client applications. Oracle has not disclosed the affected function, protocol message, or input-handling error inside Connector/Python. Network reachability to an application using the connector is sufficient; the documented consequence is limited to a hang or repeatable process crash.

CVSS severity7.5
High
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in Oracle MySQL Connector/Python 8.3.0 and earlier allows remote attackers to hang or repeatedly crash client applications. Oracle has not disclosed the affected function, protocol message, or input-handling error inside Connector/Python. Network reachability to an application using the connector is sufficient; the documented consequence is limited to a hang or repeatable process crash.

The record

CVE
CVE-2024-21090
Published
Apr 16, 2024
Updated
Mar 27, 2025
Vendor
Oracle Corporation
Product
MySQL Connectors
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 27, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=* <=8.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Oracle Corporation · MySQL Connectorsversion=* <=8.3.0

Published CVSS scores

7.5Oracle CorporationCVSS:3.1/AV:N/AC:L/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

T1499.004Endpoint Denial of Service: Application or System Exploitation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo