Unauthenticated remote RCE affecting widely deployed HPE AOS-8 network appliances; device takeover can disrupt corporate networks.
CVE-2026-79889
Unauthenticated remote RCE via web endpoints on HPE AOS-8 devices
Is CVE-2026-79889 being exploited?
Not confirmed. CVE-2026-79889 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 0.63% probability of exploitation in the next 30 days.
How severe is CVE-2026-79889?
CVE-2026-79889 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-2026-79889?
Not known from our data. No patch reference has been recorded for CVE-2026-79889, 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-2026-79889 affect?
CVE-2026-79889 affects HPE AOS-8 devices (networking appliances). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-79889?
Apply vendor updates/mitigations ASAP; restrict/block management interfaces and limit admin access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote unauthenticated buffer overflow enabling arbitrary command execution and full device compromise; potential network takeover.
Immediate action required
- 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.