How severe is CVE-2020-15387?

CVE-2020-15387 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2020-15387 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15387?

CVE-2020-15387 primarily affects Broadcom Brocade Sannav. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-15387?

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-2020-15387 published?

CVE-2020-15387 was published on 2021-06-09 and last updated on 2026-06-17.

CVE-2020-15387

CVE-2020-15387 is a high-severity vulnerability in Broadcom Brocade Sannav with a CVSS 3.x base score of 7.4. 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-326.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v2: 5.8
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-326
Affected product: Broadcom Brocade Sannav
Published: 2021-06-09
Last modified: 2026-06-17

Description

The host SSH servers of Brocade Fabric OS before Brocade Fabric OS v7.4.2h, v8.2.1c, v8.2.2, v9.0.0, and Brocade SANnav before v2.1.1 utilize keys of less than 2048 bits, which may be vulnerable to man-in-the-middle attacks and/or insecure SSH communications.

Frequently asked questions

What is CVE-2020-15387?: The host SSH servers of Brocade Fabric OS before Brocade Fabric OS v7.4.2h, v8.2.1c, v8.2.2, v9.0.0, and Brocade SANnav before v2.1.1 utilize keys of less than 2048 bits, which may be vulnerable to man-in-the-middle attacks and/or insecure SSH communications.
How severe is CVE-2020-15387?: CVE-2020-15387 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2020-15387 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15387?: CVE-2020-15387 primarily affects Broadcom Brocade Sannav. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-15387?: 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-2020-15387 published?: CVE-2020-15387 was published on 2021-06-09 and last updated on 2026-06-17.

References

https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2021-1291

Affected products (12)

cpe:2.3:a:broadcom:brocade_sannav:*:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:fabric_operating_system:7.4.2:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:fabric_operating_system:7.4.2a:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:fabric_operating_system:7.4.2b:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:fabric_operating_system:7.4.2c:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:fabric_operating_system:7.4.2d:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:fabric_operating_system:7.4.2f:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:fabric_operating_system:7.4.2g:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:fabric_operating_system:8.2.1:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:fabric_operating_system:8.2.1a:*:*:*:*:*:*:*
cpe:2.3:o:broadcom:fabric_operating_system:8.2.1b:*:*:*:*:*:*:*

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