How severe is CVE-2018-5493?

CVE-2018-5493 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 none, integrity none, and availability high.

Is CVE-2018-5493 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5493?

CVE-2018-5493 affects Atto Fibrebridge 7500n Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-5493?

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-2018-5493 published?

CVE-2018-5493 was published on 2020-05-07 and last updated on 2026-06-17.

CVE-2018-5493

CVE-2018-5493 is a high-severity vulnerability in Atto Fibrebridge 7500n Firmware 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.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Atto Fibrebridge 7500n Firmware
Published: 2020-05-07
Last modified: 2026-06-17

Description

ATTO FibreBridge 7500N firmware versions prior to 2.90 are susceptible to a vulnerability which allows an unauthenticated remote attacker to cause Denial of Service (DoS).

Frequently asked questions

What is CVE-2018-5493?: ATTO FibreBridge 7500N firmware versions prior to 2.90 are susceptible to a vulnerability which allows an unauthenticated remote attacker to cause Denial of Service (DoS).
How severe is CVE-2018-5493?: CVE-2018-5493 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 none, integrity none, and availability high.
Is CVE-2018-5493 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5493?: CVE-2018-5493 affects Atto Fibrebridge 7500n Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-5493?: 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-2018-5493 published?: CVE-2018-5493 was published on 2020-05-07 and last updated on 2026-06-17.

References

https://security.netapp.com/advisory/ntap-20200507-0001/

Affected products (1)

cpe:2.3:o:atto:fibrebridge_7500n_firmware:*:*:*:*:*:*:*:*

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