CVE-2026-73776: A signature verification bypass vulnerability exists in the command line interface of AOS-CX

Q: How do I fix CVE-2026-73776?

arubaos-cx: upgrade to newer than 10.17.1021. Exact commands for each OS are on this page.

Q: Is CVE-2026-73776 being exploited?

CVE-2026-73776 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-73776 affect?

CVE-2026-73776 affects arubaos-cx. Severity is high (CVSS 7.9). A signature verification bypass vulnerability exists in the command line interface of AOS-CX. Successful exploitation could allow an authenticated malicious actor with administrative privileges to execute arbitrary code on the underlying op

Routine

HIGH 7.9UPGRADE

CVE-2026-73776 is a high-severity flaw (CVSS 7.9) affecting arubaos-cx. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A signature verification bypass vulnerability exists in the command line interface of AOS-CX. Successful exploitation could allow an authenticated malicious actor with administrative privileges to execute arbitrary code on the underlying operating system, when certain pre-conditions outside of the attackerâ€™s control are met.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.9 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-347
Published	2026-09-01
Last modified	2026-09-04

Publisher (CNA): Hewlett Packard Enterprise (HPE) · Vendor: hpe

Last updated 2026-09-04 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-01 21:18 UTCPublished CVE record published
2026-09-04 14:53 UTCUpdated Record last modified

hpe arubaos-cx UPGRADE

Affected: <= 10.10.1180 · >= 10.13.0000 and <= 10.13.1180 · >= 10.16.0000 and <= 10.16.1051 · >= 10.17.0000 and <= 10.17.1021 · 10.18.0001

Fixed in: newer than 10.17.1021

Safe to downgrade to: a release before 10.13.0000

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-73776?

arubaos-cx: upgrade to newer than 10.17.1021. Exact commands for each OS are on this page.

Is CVE-2026-73776 being exploited?

CVE-2026-73776 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-73776 affect?

CVE-2026-73776 affects arubaos-cx. Severity is high (CVSS 7.9). A signature verification bypass vulnerability exists in the command line interface of AOS-CX. Successful exploitation could allow an authenticated malicious actor with administrative privileges to execute arbitrary code on the underlying op

How urgent is CVE-2026-73776?

Priority 28/100. High severity

Related CVEs

CVE-2026-44880 HIGH 8.8 UPGRADE A buffer overflow vulnerability was found in the command line interface of AOS-CX
CVE-2026-63454 HIGH 7.2 UPGRADE An authenticated path traversal vulnerability exists in AOS-CX
CVE-2026-63453 HIGH 7.2 UPGRADE Buffer overflow vulnerabilities exist in the command line interface of AOS-CX
CVE-2026-73783 MEDIUM 4.9 UPGRADE Stack overflow vulnerabilities exist in an API endpoint of AOS-CX
CVE-2026-73749 CRITICAL 9.8 UPGRADE Multiple vulnerabilities exist in a daemon of AOS-CX that may allow for improper processing of malformed input

References

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