| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.7 | $0-$5k | 0.00 |
Summary
A vulnerability, which was classified as critical, has been found in Oracle MySQL Server up to 8.0.25. Impacted is an unknown function of the component DML. This manipulation causes denial of service. This vulnerability appears as CVE-2021-2440. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component.
Details
A vulnerability classified as critical was found in Oracle MySQL Server up to 8.0.25 (Database Software). Affected by this vulnerability is an unknown functionality of the component DML. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.
The weakness was presented 07/20/2021 as Oracle Critical Patch Update Advisory - July 2021. The advisory is shared at oracle.com. This vulnerability is known as CVE-2021-2440. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.
The vulnerability scanner Nessus provides a plugin with the ID 245553 (Linux Distros Unpatched Vulnerability : CVE-2021-2440), which helps to determine the existence of the flaw in a target environment.
Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the vulnerability database at Tenable (245553). If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Product
Type
Vendor
Name
Version
- 8.0.0
- 8.0.1
- 8.0.2
- 8.0.3
- 8.0.4
- 8.0.5
- 8.0.6
- 8.0.7
- 8.0.8
- 8.0.9
- 8.0.10
- 8.0.11
- 8.0.12
- 8.0.13
- 8.0.14
- 8.0.15
- 8.0.16
- 8.0.17
- 8.0.18
- 8.0.19
- 8.0.20
- 8.0.21
- 8.0.22
- 8.0.23
- 8.0.24
- 8.0.25
License
Website
- Vendor: https://www.oracle.com
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 4.9VulDB Meta Temp Score: 4.7
VulDB Base Score: 4.9
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
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| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Denial of serviceCWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 245553
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2021-2440
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
12/09/2020 🔍07/20/2021 🔍
07/20/2021 🔍
07/21/2021 🔍
08/08/2025 🔍
Sources
Vendor: oracle.comAdvisory: Oracle Critical Patch Update Advisory - July 2021
Status: Confirmed
CVE: CVE-2021-2440 (🔍)
GCVE (CVE): GCVE-0-2021-2440
GCVE (VulDB): GCVE-100-179173
Entry
Created: 07/21/2021 10:37Updated: 08/08/2025 18:07
Changes: 07/21/2021 10:37 (40), 07/24/2021 23:30 (2), 07/24/2021 23:45 (1), 08/08/2025 18:07 (16)
Complete: 🔍
Cache ID: 216::103
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
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