CVE-2026-73777
Unauthenticated API authentication bypass in HPE Aruba AOS-CX switches.
Is CVE-2026-73777 being exploited?
Not confirmed. CVE-2026-73777 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.27% probability of exploitation in the next 30 days.
How severe is CVE-2026-73777?
CVE-2026-73777 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-73777?
Yes. A fix has been recorded for CVE-2026-73777. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73777 affect?
CVE-2026-73777 affects HPE Aruba AOS-CX switches, AOS-CX API endpoints. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73777?
Install vendor patch ASAP; restrict API access via ACLs/firewall.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote unauthenticated actor can bypass API auth to access/modify switch configs, exfiltrate data, or maintain persistent access.
Immediate action required
- affected>= 10.18.0000 and <= 10.18.0001
- affected>= 10.17.0000 and <= 10.17.1021
- affected>= 10.16.0000 and <= 10.16.1051
- affected>= 10.13.0000 and <= 10.13.1180
- affected>= 10.10.0000 and <= 10.10.1180
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.