How severe is CVE-2026-73783?

CVE-2026-73783 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-73783 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-73783?

CVE-2026-73783 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-2026-73783?

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

When was CVE-2026-73783 published?

CVE-2026-73783 was published on 2026-09-01 and last updated on 2026-10-05.

CVE-2026-73783

CVE-2026-73783 is a medium-severity vulnerability in Hpe Arubaos-cx with a CVSS 3.x base score of 4.9. 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-121.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-121
Affected product: Hpe Arubaos-cx
Published: 2026-09-01
Last modified: 2026-10-05

Description

Stack overflow vulnerabilities exist in an API endpoint of AOS-CX. Successful exploitation could allow an authenticated malicious actor to cause a denial-of-service condition on the affected system.

Frequently asked questions

What is CVE-2026-73783?: Stack overflow vulnerabilities exist in an API endpoint of AOS-CX. Successful exploitation could allow an authenticated malicious actor to cause a denial-of-service condition on the affected system.
How severe is CVE-2026-73783?: CVE-2026-73783 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-73783 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-73783?: CVE-2026-73783 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-2026-73783?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2026-73783 published?: CVE-2026-73783 was published on 2026-09-01 and last updated on 2026-10-05.

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 →

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities

CVE-2026-7866 — Critical (CVSS 10.0): Stack-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers. This…
CVE-2026-12848 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-12847 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-12846 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-12485 — Critical (CVSS 10.0): GV-I/O Box 4E is a smart embedded device with 4 input and 4 relays output that can be controlled over Ethernet and…
CVE-2026-37541 — Critical (CVSS 10.0): Buffer overflow vulnerability in Open Vehicle Monitoring System 3 (OVMS3) 3.3.005. In canformat_gvret.cpp, the length…

Browse all CWE-121 (Stack-based Buffer Overflow) vulnerabilities →