Unauthenticated remote RCE/privilege escalation in HPE Fabric Composer SSH affecting core networking infrastructure; widespread enterprise impact and full compromise risk.
CVE-2026-76658
Unauthenticated remote admin RCE in HPE Fabric Composer SSH (CVSS 10.0)
Is CVE-2026-76658 being exploited?
Not confirmed. CVE-2026-76658 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 0.43% probability of exploitation in the next 30 days.
How severe is CVE-2026-76658?
CVE-2026-76658 is rated Critical with a CVSS score of 10.0. 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-2026-76658?
Yes. A fix has been recorded for CVE-2026-76658. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76658 affect?
CVE-2026-76658 affects HPE Networking Fabric Composer (AFC) hosts, HPE networking appliances running Fabric Composer. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76658?
Install HPE security update immediately; restrict/disable SSH and isolate affected hosts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote attacker can gain administrative shell via SSH, execute arbitrary commands as privileged user, causing full system compromise.
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.