How severe is CVE-2018-1388?

CVE-2018-1388 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-1388 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1388?

CVE-2018-1388 primarily affects Ibm Websphere Mq. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-1388?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-1388 published?

CVE-2018-1388 was published on 2018-02-07 and last updated on 2026-06-17.

CVE-2018-1388

CVE-2018-1388 is a high-severity vulnerability in Ibm Websphere Mq with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Ibm Websphere Mq
Published: 2018-02-07
Last modified: 2026-06-17

Description

GSKit V7 may disclose side channel information via discrepancies between valid and invalid PKCS#1 padding. IBM X-Force ID: 138212.

Frequently asked questions

What is CVE-2018-1388?: GSKit V7 may disclose side channel information via discrepancies between valid and invalid PKCS#1 padding. IBM X-Force ID: 138212.
How severe is CVE-2018-1388?: CVE-2018-1388 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-1388 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1388?: CVE-2018-1388 primarily affects Ibm Websphere Mq. In total, 15 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-1388?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-1388 published?: CVE-2018-1388 was published on 2018-02-07 and last updated on 2026-06-17.

References

Affected products (15)

cpe:2.3:a:ibm:websphere_mq:7.0.1.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.7:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.8:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.9:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.10:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.11:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.12:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.13:*:*:*:*:*:*:*
cpe:2.3:a:ibm:websphere_mq:7.0.1.14:*:*:*:*:*:*:*

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