How severe is CVE-2018-3123?

CVE-2018-3123 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-3123 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3123?

CVE-2018-3123 affects Oracle Mysql. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-3123?

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

When was CVE-2018-3123 published?

CVE-2018-3123 was published on 2019-04-23 and last updated on 2026-06-17.

CVE-2018-3123

CVE-2018-3123 is a medium-severity vulnerability in Oracle Mysql with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
CVSS v2: 4.3
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Oracle Mysql
Published: 2019-04-23
Last modified: 2026-06-17

Description

Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: libmysqld). Supported versions that are affected are 5.6.42 and prior, 5.7.24 and prior and 8.0.13 and prior. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. CVSS 3.0 Base Score 5.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).

Frequently asked questions

What is CVE-2018-3123?: Vulnerability in the MySQL Server component of Oracle MySQL (subcomponent: Server: libmysqld). Supported versions that are affected are 5.6.42 and prior, 5.7.24 and prior and 8.0.13 and prior. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise MySQL Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all MySQL Server accessible data. CVSS 3.0 Base Score 5.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).
How severe is CVE-2018-3123?: CVE-2018-3123 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-3123 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-3123?: CVE-2018-3123 affects Oracle Mysql. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-3123?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-3123 published?: CVE-2018-3123 was published on 2019-04-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:oracle:mysql:*:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

124.223.78.215 (ipv4-addr)
85.95.166.40 (ipv4-addr)
180.76.184.79 (ipv4-addr)
159.253.22.85 (ipv4-addr)
120.55.5.49 (ipv4-addr)