How severe is CVE-2025-21519?

CVE-2025-21519 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-21519 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-21519?

CVE-2025-21519 affects Oracle Mysql Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-21519?

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

Does CVE-2025-21519 have an EU (EUVD) identifier?

Yes. CVE-2025-21519 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2508.

When was CVE-2025-21519 published?

CVE-2025-21519 was published on 2025-01-21 and last updated on 2026-06-17.

CVE-2025-21519

CVE-2025-21519 is a medium-severity vulnerability in Oracle Mysql Server with a CVSS 3.x base score of 4.4. 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-863.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-2508
Weakness: CWE-863
Affected product: Oracle Mysql Server
Published: 2025-01-21
Last modified: 2026-06-17

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges). 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 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).

Frequently asked questions

What is CVE-2025-21519?: Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: Security: Privileges). 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 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 4.4 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).
How severe is CVE-2025-21519?: CVE-2025-21519 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-21519 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-21519?: CVE-2025-21519 affects Oracle Mysql Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-21519?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-21519 have an EU (EUVD) identifier?: Yes. CVE-2025-21519 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-2508.
When was CVE-2025-21519 published?: CVE-2025-21519 was published on 2025-01-21 and last updated on 2026-06-17.

References

Affected products (1)

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

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