How severe is CVE-2018-1684?

CVE-2018-1684 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-1684 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1684?

CVE-2018-1684 primarily affects Ibm Websphere Mq. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-1684?

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

When was CVE-2018-1684 published?

CVE-2018-1684 was published on 2018-11-09 and last updated on 2026-06-17.

CVE-2018-1684

CVE-2018-1684 is a medium-severity vulnerability in Ibm Websphere Mq with a CVSS 3.x base score of 5.3. 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 5.3)
CVSS v2: 4.0
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Websphere Mq
Published: 2018-11-09
Last modified: 2026-06-17

Description

IBM WebSphere MQ 8.0 through 9.1 is vulnerable to a error with MQTT topic string publishing that can cause a denial of service attack. IBM X-Force ID: 145456.

Frequently asked questions

What is CVE-2018-1684?: IBM WebSphere MQ 8.0 through 9.1 is vulnerable to a error with MQTT topic string publishing that can cause a denial of service attack. IBM X-Force ID: 145456.
How severe is CVE-2018-1684?: CVE-2018-1684 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-1684 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1684?: CVE-2018-1684 primarily affects Ibm Websphere Mq. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-1684?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1684 published?: CVE-2018-1684 was published on 2018-11-09 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:websphere_mq:*:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:9.1.0.0:*:*:*:*:*:*:*

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