How severe is CVE-2025-21520?

CVE-2025-21520 has a CVSS 3.x base score of 1.8, rated low severity. It is exploitable over local access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-21520 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-21520?

CVE-2025-21520 primarily affects Oracle Mysql Cluster. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-21520?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-21520 have an EU (EUVD) identifier?

Yes. CVE-2025-21520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2509.

When was CVE-2025-21520 published?

CVE-2025-21520 was published on 2025-01-21 and last updated on 2026-06-17.

CVE-2025-21520

CVE-2025-21520 is a low-severity vulnerability in Oracle Mysql Cluster with a CVSS 3.x base score of 1.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.

Key facts

Severity: Low (CVSS 3.x base score 1.8)
EPSS exploit prediction: 0% (21st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-2509
Weakness: CWE-732
Affected product: Oracle Mysql Cluster
Published: 2025-01-21
Last modified: 2026-06-17

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).

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).
How severe is CVE-2025-21520?: CVE-2025-21520 has a CVSS 3.x base score of 1.8, rated low severity. It is exploitable over local access with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-21520 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (21st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-21520?: CVE-2025-21520 primarily affects Oracle Mysql Cluster. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-21520?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-21520 have an EU (EUVD) identifier?: Yes. CVE-2025-21520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2509.
When was CVE-2025-21520 published?: CVE-2025-21520 was published on 2025-01-21 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:oracle:mysql_cluster:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*

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