CVE-2023-21971

Vulnerability in the MySQL Connectors product of Oracle MySQL (component: Connector/J). Supported versions that are affected are 8.0.32 and prior. Difficult to exploit vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Connectors. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Connectors as well as unauthorized update, insert or delete access to some of MySQL Connectors accessible data and unauthorized read access to a subset of MySQL Connectors accessible data. CVSS 3.1 Base Score 5.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:H).

Published: 2023-04-18 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-21971 is rated Moderate Risk (45.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.29%). EPSS rose +1.11% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-21971

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.17% 1.29% +1.11%
2 2026-05-06 0.13% 0.17% +0.04%
3 2025-11-21 — 0.13% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-21971

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 0.5 4.7 [email protected]

Weakness enumeration for CVE-2023-21971

OS Trackers for CVE-2023-21971

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2023-21971
suse medium — https://www.suse.com/security/cve/CVE-2023-21971/
ubuntu medium CVE-2023-21971 medium priority: Ubuntu including 1 source packages (mysql-connector-java), 11 status rows across 11 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 7, needs-triage 4. https://ubuntu.com/security/CVE-2023-21971

Affected software / configurations for CVE-2023-21971

Vendor Product Version Raw CPE
oracle communications_cloud_native_core_binding_support_function 22.4.0 cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.4.0:*:*:*:*:*:*:*
oracle communications_cloud_native_core_binding_support_function 23.1.0 cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:23.1.0:*:*:*:*:*:*:*
oracle communications_cloud_native_core_policy 22.4.0 cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.4.0:*:*:*:*:*:*:*
oracle communications_cloud_native_core_policy 23.1.0 cpe:2.3:a:oracle:communications_cloud_native_core_policy:23.1.0:*:*:*:*:*:*:*
oracle mysql_connectors >= 8.0.0, <= 8.0.32 cpe:2.3:a:oracle:mysql_connectors:*:*:*:*:*:*:*:*
netapp active_iq_unified_manager — cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:*
netapp active_iq_unified_manager — cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
netapp active_iq_unified_manager — cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:*
netapp oncommand_insight — cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*
netapp snapcenter — cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*

References for CVE-2023-21971

cvelogic Threat Intelligence