SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2023-21887

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: GIS).

MEDIUM 4.9EPSS 43.4%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 43.4%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

Vulnerability in the MySQL Server product of Oracle MySQL (component: Server: GIS). Supported versions that are affected are 8.0.31 and prior. Easily exploitable 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 4.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS 3.1
4.9 MEDIUMCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
EPSS
43.40% probability · 99th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
oracle/mysql
Source
secalert_us@oracle.com
EPSS trend
0%23%45%3 November 2026: 43.40%3 November 20263 November 2026

EPSS 43.4% since 3 November 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.

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