// For flags

CVE-2025-21491

mysql: MySQL Server InnoDB Denial of Service and Unauthorized Data Modification Vulnerability

Severity Score

4.9
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Vulnerability in the MySQL Server product of Oracle MySQL (component: InnoDB). Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and 9.1.0 and prior. Easily exploitable 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 hang or frequently repeatable crash (complete DOS) of MySQL Server. CVSS 3.1 Base Score 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

A flaw was found in MySQL Server, specifically in the InnoDB component. This vulnerability allows a high-privileged attacker to cause a hang or frequently repeatable crash, resulting in a complete denial of service via network access through multiple protocols.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Multiple
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-12-24 CVE Reserved
  • 2025-01-21 CVE Published
  • 2025-01-23 CVE Updated
  • 2025-01-24 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-404: Improper Resource Shutdown or Release
  • CWE-770: Allocation of Resources Without Limits or Throttling
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Oracle Corporation
Search vendor "Oracle Corporation"
 MySQL Server
Search vendor "Oracle Corporation" for product "MySQL Server"
 <= 8.0.40
Search vendor "Oracle Corporation" for product "MySQL Server" and version " <= 8.0.40"
en
Affected
Oracle Corporation
Search vendor "Oracle Corporation"
 MySQL Server
Search vendor "Oracle Corporation" for product "MySQL Server"
 <= 8.4.3
Search vendor "Oracle Corporation" for product "MySQL Server" and version " <= 8.4.3"
en
Affected
Oracle Corporation
Search vendor "Oracle Corporation"
 MySQL Server
Search vendor "Oracle Corporation" for product "MySQL Server"
 <= 9.1.0
Search vendor "Oracle Corporation" for product "MySQL Server" and version " <= 9.1.0"
en
Affected