Auth bypass in widely deployed HPE AOS-CX enterprise switches could enable admin access and major network disruption; significant operational impact.
CVE-2026-73779
Unauthenticated authentication bypass in HPE AOS-CX switch OS
Is CVE-2026-73779 being exploited?
Not confirmed. CVE-2026-73779 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 0.17% probability of exploitation in the next 30 days.
How severe is CVE-2026-73779?
CVE-2026-73779 is rated High with a CVSS score of 8.2. 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-2026-73779?
Yes. A fix has been recorded for CVE-2026-73779. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73779 affect?
CVE-2026-73779 affects HPE Aruba AOS-CX switches (network OS). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73779?
Apply vendor patch ASAP; restrict management plane access and monitor switch logs
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote attacker can bypass authentication to gain administrative access, modify configs, disrupt network traffic, and exfiltrate data.
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.