How severe is CVE-2026-73737?

CVE-2026-73737 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-73737 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-73737?

CVE-2026-73737 affects Arubanetworks Fabric Composer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-73737?

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

When was CVE-2026-73737 published?

CVE-2026-73737 was published on 2026-09-01 and last updated on 2026-09-03.

CVE-2026-73737

CVE-2026-73737 is a medium-severity vulnerability in Arubanetworks Fabric Composer with a CVSS 3.x base score of 4.8. 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-22.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Arubanetworks Fabric Composer
Published: 2026-09-01
Last modified: 2026-09-03

Description

An unauthenticated path traversal vulnerability exists in the API endpoint of HPE Networking Fabric Composer. Successful exploitation could allow an unauthenticated adjacent attacker to manipulate user generated files, potentially leading to unauthorized changes in critical system configurations, if certain preconditions outside of the attacker's control are met.

Frequently asked questions

What is CVE-2026-73737?: An unauthenticated path traversal vulnerability exists in the API endpoint of HPE Networking Fabric Composer. Successful exploitation could allow an unauthenticated adjacent attacker to manipulate user generated files, potentially leading to unauthorized changes in critical system configurations, if certain preconditions outside of the attacker's control are met.
How severe is CVE-2026-73737?: CVE-2026-73737 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-73737 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-73737?: CVE-2026-73737 affects Arubanetworks Fabric Composer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-73737?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-73737 published?: CVE-2026-73737 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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