How severe is CVE-2026-73781?

CVE-2026-73781 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-73781 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-73781?

CVE-2026-73781 primarily affects Hpe Arubaos-cx. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-73781?

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-2026-73781 published?

CVE-2026-73781 was published on 2026-09-01 and last updated on 2026-09-04.

CVE-2026-73781

CVE-2026-73781 is a high-severity vulnerability in Hpe Arubaos-cx with a CVSS 3.x base score of 8.4. 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-79.

Key facts

Severity: High (CVSS 3.x base score 8.4)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Hpe Arubaos-cx
Published: 2026-09-01
Last modified: 2026-09-04

Description

A vulnerability in the web-based management interface of AOS-CX could allow an authenticated remote attacker to conduct a stored cross-site scripting (XSS) attack against an administrative user of the interface. A successful exploit allows an attacker to execute arbitrary script code in a victim's browser in the context of the affected interface.

Frequently asked questions

What is CVE-2026-73781?: A vulnerability in the web-based management interface of AOS-CX could allow an authenticated remote attacker to conduct a stored cross-site scripting (XSS) attack against an administrative user of the interface. A successful exploit allows an attacker to execute arbitrary script code in a victim's browser in the context of the affected interface.
How severe is CVE-2026-73781?: CVE-2026-73781 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-73781 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-73781?: CVE-2026-73781 primarily affects Hpe Arubaos-cx. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-73781?: 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-2026-73781 published?: CVE-2026-73781 was published on 2026-09-01 and last updated on 2026-09-04.

References

https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05134en_us&docLocale=en_US

Affected products (2)

cpe:2.3:o:hpe:arubaos-cx:*:*:*:*:*:*:*:*
cpe:2.3:o:hpe:arubaos-cx:10.18.0001:*:*:*:*:*:*:*

More vulnerabilities in Hpe Arubaos-cx

CVE-2026-73749 — Critical (CVSS 9.8): Multiple vulnerabilities exist in a daemon of AOS-CX that may allow for improper processing of malformed input. An…
CVE-2026-23813 — Critical (CVSS 9.8): A vulnerability has been identified in the web-based management interface of AOS-CX switches that could potentially…
CVE-2026-73782 — High (CVSS 8.8): A format string vulnerability exists in the command line interface of AOS-CX that could lead to unauthenticated remote…
CVE-2026-73753 — High (CVSS 8.8): Exploitation through affected command-line operations could allow an authenticated low-privileged user to execute…
CVE-2026-73752 — High (CVSS 8.8): An unauthenticated arbitrary file write vulnerability exists in an API endpoint of AOS-CX. Successful exploitation of…
CVE-2026-73751 — High (CVSS 8.8): An authenticated user with low-privileged access could submit crafted input through the web-based management interface…

All CVEs affecting Hpe Arubaos-cx →

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