SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-2471

Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/J).

MEDIUM 5.9EPSS 7.49%

Does this matter?

Lower severity and a low EPSS score (7.49%). Track it; it rarely justifies an emergency change on its own.

Description

Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/J). Supported versions that are affected are 8.0.26 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Connectors. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Connectors accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Connectors. CVSS 3.1 Base Score 5.9 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H).

CVSS 3.1
5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:H
EPSS
7.49% probability · 94th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
oracle/communications cloud native core console · oracle/communications cloud native core network slice selection function · oracle/communications cloud native core policy · oracle/communications cloud native core security edge protection proxy · oracle/mysql connectors · quarkus/quarkus
Source
secalert_us@oracle.com
EPSS trend
0%5%10%26 October 2026: 7.49%26 October 202626 October 2026

EPSS 7.5% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.