CVE-2026-73705
Authenticated arbitrary file write in HPE Fabric Composer API enabling OS command execution.
Is CVE-2026-73705 being exploited?
Not confirmed. CVE-2026-73705 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 0.35% probability of exploitation in the next 30 days.
How severe is CVE-2026-73705?
CVE-2026-73705 is rated High with a CVSS score of 8.8. 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-2026-73705?
Yes. A fix has been recorded for CVE-2026-73705. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73705 affect?
CVE-2026-73705 affects HPE Networking Fabric Composer, Fabric Composer API endpoints, Appliances running Fabric Composer. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73705?
Apply HPE security update immediately; restrict operator accounts and rotate credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated low-priv operator can write arbitrary files via API, leading to OS command execution and 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.