How severe is CVE-2021-42775?

CVE-2021-42775 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2021-42775 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-42775?

CVE-2021-42775 affects Broadcom Emulex Hba Manager. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-42775?

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

When was CVE-2021-42775 published?

CVE-2021-42775 was published on 2021-11-12 and last updated on 2026-06-17.

CVE-2021-42775

CVE-2021-42775 is a critical-severity vulnerability in Broadcom Emulex Hba Manager with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Broadcom Emulex Hba Manager
Published: 2021-11-12
Last modified: 2026-06-17

Description

Broadcom Emulex HBA Manager/One Command Manager versions before 11.4.425.0 and 12.8.542.31, if not installed in Strictly Local Management mode, have a vulnerability in the remote firmware download feature that could allow a user to place or replace an arbitrary file on the remote host. In non-secure mode, the user is unauthenticated.

Frequently asked questions

What is CVE-2021-42775?: Broadcom Emulex HBA Manager/One Command Manager versions before 11.4.425.0 and 12.8.542.31, if not installed in Strictly Local Management mode, have a vulnerability in the remote firmware download feature that could allow a user to place or replace an arbitrary file on the remote host. In non-secure mode, the user is unauthenticated.
How severe is CVE-2021-42775?: CVE-2021-42775 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2021-42775 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-42775?: CVE-2021-42775 affects Broadcom Emulex Hba Manager. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-42775?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-42775 published?: CVE-2021-42775 was published on 2021-11-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:broadcom:emulex_hba_manager:*:*:*:*:*:*:*:*

More vulnerabilities in Broadcom Emulex Hba Manager

CVE-2021-42774 — Critical (CVSS 9.8): Broadcom Emulex HBA Manager/One Command Manager versions before 11.4.425.0 and 12.8.542.31, if not installed in…
CVE-2021-42772 — Critical (CVSS 9.8): Broadcom Emulex HBA Manager/One Command Manager versions before 11.4.425.0 and 12.8.542.31, if not installed in…
CVE-2021-42773 — High (CVSS 7.5): Broadcom Emulex HBA Manager/One Command Manager versions before 11.4.425.0 and 12.8.542.31, if not installed in…

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