PatchTheCVECVE-2026-76657: Vulnerabilities have been identified in the API of HPE Networking Fabric Composer that could potentially allow
CVE-2026-76657 is a critical-severity flaw (CVSS 10.0) affecting fabric composer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Vulnerabilities have been identified in the API of HPE Networking Fabric Composer that could potentially allow an unauthenticated remote attacker to circumvent existing authentication controls. Successful exploitation could allow an attacker to gain administrative privileges leading to complete compromise of the HPE Networking Fabric Composer host.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 10.0 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.7% (top 45%) |
| CISA exploited list | No |
| Weakness | CWE-287 |
| Published | 2026-09-01 |
| Last modified | 2026-09-02 |
Last updated 2026-09-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-76657?
fabric composer: upgrade to 7.3.4. Exact commands for each OS are on this page.
Is CVE-2026-76657 being exploited?
CVE-2026-76657 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-76657 affect?
CVE-2026-76657 affects fabric composer. Severity is critical (CVSS 10.0). Vulnerabilities have been identified in the API of HPE Networking Fabric Composer that could potentially allow an unauthenticated remote attacker to circumvent existing authentication controls. Successful exploitation could allow an attacke
How urgent is CVE-2026-76657?
Priority 54/100. Critical severity; Remotely exploitable, no login, no user action
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- CVE-2026-73729 MEDIUM 6.5 UPGRADE A vulnerability in the underlying operating system of HPE Networking Fabric Composer could allow an authentica
- CVE-2026-73730 MEDIUM 6.5 UPGRADE A privilege escalation vulnerability exists in the API of HPE Networking Fabric Composer