CVE-2025-21520

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Options). Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and 9.1.0 and prior. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where MySQL Server executes to compromise MySQL Server. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized read access to a subset of MySQL Server accessible data. CVSS 3.1 Base Score 1.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N).

CVSS v3.1 Score

1.8

LOW

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

Weakness Type (CWE)

CWE-732 CWE-732

Affected Products

Vendor	Product	Versions
oracle	mysql_cluster	7.6.0 — 7.6.32
oracle	mysql_cluster	8.0.0 — 8.0.40
oracle	mysql_cluster	8.4.0 — 8.4.3
oracle	mysql_cluster	9.0.0 — 9.1.0
oracle	mysql_server	8.0.0 — 8.0.40
oracle	mysql_server	8.4.0 — 8.4.3
oracle	mysql_server	9.0.0 — 9.1.0

References

Advisories & Patches

https://www.oracle.com/security-alerts/cpujan2025.html

Other References

https://security.netapp.com/advisory/ntap-20250131-0004/

Frequently Asked Questions

What is CVE-2025-21520? +

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Options). Supported versions that are affected are 8.0.40 and prior, 8.4.3 and prior and 9.1.0 and prior. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where MySQL Server executes to compromise MySQL Server. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized read access to a subset of MySQL Server accessible data. CVSS 3.1 Base Score 1.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:N/A:N). It has a CVSS v3.1 base score of 1.8 (LOW).

How severe is CVE-2025-21520? +

CVE-2025-21520 has a CVSS v3.1 score of 1.8 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-21520? +

CVE-2025-21520 affects products from oracle, specifically: mysql_cluster, mysql_server. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-21520? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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