Unauthenticated RCE in widely deployed HPE network management product enabling full host compromise and potential network control; high-impact for enterprise networking.
CVE-2026-73701
Unauthenticated RCE in HPE Networking Fabric Composer allows full host compromise
Is CVE-2026-73701 being exploited?
Not confirmed. CVE-2026-73701 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 0.52% probability of exploitation in the next 30 days.
How severe is CVE-2026-73701?
CVE-2026-73701 is rated Critical with a CVSS score of 9.0. 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-2026-73701?
Yes. A fix has been recorded for CVE-2026-73701. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73701 affect?
CVE-2026-73701 affects HPE Networking Fabric Composer, Fabric Composer appliance / underlying host OS. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73701?
Apply HPE vendor patch immediately; isolate affected hosts and audit for compromise
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote code execution as a privileged user on the Fabric Composer host, enabling complete host compromise and potential network/control plane takeover.
Immediate action required
- affected>= 7.0.0 and <= 7.3.3
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.