CVE-2024-21237VulnerabilityPublished 15 Oct 2024Updated 3 Nov 2025

CVE-2024-21237: Oracle MySQL Server · Difficult to exploit vulnerability allows high privileged attacker with network access via multiple

Affects Oracle MySQL ServerSource CVE Database V5

Not known to be exploited · CVSS 2.2 Low.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

2.2Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.7% chance of exploitation in 30 days – higher than 53% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L

Attack Vector: Network
Attack Complexity: High
Privileges Required: High
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 15 Oct 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Mysqlmysql/mysql-server`pkg:deb/mysql/mysql-server`Other threats	Affected <=8.0.39 <=8.4.2 <=9.0.1	Fixed in–

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AI-suggested

European organizations should implement the following specific mitigations: 1) Restrict network access to MySQL servers, especially limiting high-privileged user connections to trusted hosts and networks only. 2) Enforce the principle of least privilege by reviewing and minimizing high-privileged accounts with network access to MySQL. 3) Monitor MySQL server logs and network traffic for unusual activity related to group replication communications. 4) Apply network segmentation and firewall rules to isolate MySQL servers from untrusted networks. 5) Stay updated with Oracle’s security advisories and apply patches promptly once available. 6) Consider disabling group replication features if not required or temporarily suspending replication during investigation. 7) Conduct regular security audits and vulnerability scans focusing on database infrastructure. These targeted actions go beyond generic advice by focusing on the specific attack vector and component affected.

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Group Replication GCS). Supported versions that are affected are 8.0.39 and prior, 8.4.2 and prior and 9.0.1 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of MySQL Server. CVSS 3.1 Base Score 2.2 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L).

Impact

For European organizations, the primary impact of CVE-2024-21237 is a potential partial denial of service on MySQL Server instances, particularly those utilizing group replication features. This could lead to degraded database availability, affecting business-critical applications, especially in sectors like finance, telecommunications, and public services that rely heavily on MySQL for data management and replication. Although the vulnerability does not compromise data confidentiality or integrity, even partial service disruptions can cause operational delays, loss of productivity, and reputational damage. Organizations with high-privileged users having network access to MySQL servers are at greater risk. Given the difficulty of exploitation and the requirement for high privileges, the threat is less immediate but still warrants attention in environments where MySQL servers are exposed or insufficiently segmented. The lack of known exploits reduces immediate risk but does not eliminate the need for proactive mitigation.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Nov 2025, 23:50 UTC

Technical details

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