How severe is CVE-2026-73743?

CVE-2026-73743 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-73743 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-73743?

CVE-2026-73743 affects Arubanetworks Fabric Composer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-73743?

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

When was CVE-2026-73743 published?

CVE-2026-73743 was published on 2026-09-01 and last updated on 2026-09-03.

CVE-2026-73743

CVE-2026-73743 is a low-severity vulnerability in Arubanetworks Fabric Composer with a CVSS 3.x base score of 3.7. 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-319.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Affected product: Arubanetworks Fabric Composer
Published: 2026-09-01
Last modified: 2026-09-03

Description

A vulnerability in the web-based management interface of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to gain insight into some data handled by the affected interface. A successful exploit could allow an attacker to gain access to some data in a cleartext format possibly exposing other network infrastructure to further compromise.

Frequently asked questions

What is CVE-2026-73743?: A vulnerability in the web-based management interface of HPE Networking Fabric Composer could allow an unauthenticated remote attacker to gain insight into some data handled by the affected interface. A successful exploit could allow an attacker to gain access to some data in a cleartext format possibly exposing other network infrastructure to further compromise.
How severe is CVE-2026-73743?: CVE-2026-73743 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-73743 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-73743?: CVE-2026-73743 affects Arubanetworks Fabric Composer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-73743?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-73743 published?: CVE-2026-73743 was published on 2026-09-01 and last updated on 2026-09-03.

References

https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05133en_us&docLocale=en_US

Affected products (1)

cpe:2.3:a:arubanetworks:fabric_composer:*:*:*:*:*:*:*:*

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