Affects HPE/Aruba AOS network OS used broadly in enterprise networking; unauthenticated RCE on network devices risks wide outage and compromise.
CVE-2026-79863
Unauthenticated adjacent buffer overflow in HPE AOS-8/AOS-10 enabling privileged RCE
Is CVE-2026-79863 being exploited?
Not confirmed. CVE-2026-79863 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 0.26% probability of exploitation in the next 30 days.
How severe is CVE-2026-79863?
CVE-2026-79863 is rated Critical with a CVSS score of 9.6. 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-2026-79863?
Not known from our data. No patch reference has been recorded for CVE-2026-79863, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-79863 affect?
CVE-2026-79863 affects HPE AOS-10, HPE AOS-8, Aruba/HPE networking devices running AOS. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-79863?
Isolate/segment affected devices, block adjacent access, apply vendor patch when released
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated adjacent attacker can trigger buffer overflow to execute arbitrary code as a privileged OS user, leading to full device compromise and network disruption.
Immediate action required
- affected>= 10.8.0.0 and <= 10.8.1.1
- affected>= 10.7.0.0 and <= 10.7.2.6
- affected>= 10.4.0.0 and <= 10.4.1.13
- affected>= 8.13.0.0 and <= 8.13.3.0
- affected>= 8.10.0.0 and <= 8.10.0.23
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.