CVE-2026-76721
CriticalCVSS 9.8Summary
Buffer overflow vulnerability exists in the affected interface of HPE Networking Instant ON that could allow an unauthenticated remote attacker to run arbitrary code on the underlying host. Successful exploitation could allow an attacker to execute arbitrary code as a privileged user on the underlying operating system.
Risk Assessment
An attacker could gain full control over the device, potentially leading to compromise of the entire network.
Recommendation
Immediately apply HPE patches and restrict interface access to trusted networks only.
Other vulnerabilities in HPE Networking Instant ON
See all- CVE-2026-76735Medium
A sensitive information disclosure vulnerability exists in the underlying OS of HPE Networking Instant On. Successful exploitation by an authenticated local attacker with high privileges could retrieve information useful for further access to network services, but only if certain preconditions outside attacker's control are met.
- CVE-2026-76734Medium
A memory corruption vulnerability in the affected interface of HPE Networking Instant On could allow an unauthenticated remote attacker to conduct a denial of service attack. Successful exploitation could interrupt normal operation and access limited information within the component.
- CVE-2026-76733Medium
A denial-of-service vulnerability in the API endpoint of HPE Networking Instant On could allow an authenticated attacker with administrative privileges to cause a denial of service. The service resumes without manual intervention.
- CVE-2026-76732Medium
A local privilege-escalation vulnerability in the affected daemon of HPE Networking Instant On could allow a local attacker to achieve arbitrary code execution with root privileges if certain preconditions are met.
- CVE-2026-76731Medium
An authentication bypass vulnerability in the captive portal of HPE Networking Instant On could allow an unauthenticated remote attacker to circumvent existing authentication controls. Successful exploitation could allow limited data access and limited changes.
- CVE-2026-76730Medium
An authentication bypass vulnerability in the PAPI protocol of HPE Networking Instant On APs could allow an unauthenticated adjacent attacker to circumvent authentication controls. Successful exploitation could allow sending unauthorized network traffic to the target device.
- CVE-2026-76729Medium
A format string vulnerability in the API endpoint of HPE Networking Instant On APs could allow an authenticated remote attacker with high privileges to cause memory corruption with modified input. Successful exploitation could lead to DoS or remote code execution.
- CVE-2026-76728High
A vulnerability in the API endpoint of HPE Networking Instant ON APs could allow an authenticated remote attacker with high privileges to conduct a server-side request forgery (SSRF) attack. Successful exploitation could allow an attacker to execute arbitrary commands as a privileged user on the underlying operating system.
- CVE-2026-76727High
Command injection vulnerabilities exist in the affected interface of HPE Networking Instant ON that could allow an authenticated remote attacker with high privileges to perform command injection. Successful exploitation could allow an attacker to execute arbitrary commands as a privileged user on the underlying operating system.
- CVE-2026-76726High
An authentication bypass vulnerability in the API endpoint of HPE Networking Instant ON could allow an unauthenticated remote attacker to bypass network access controls if certain preconditions outside of the attacker's control are met. Successful exploitation could allow an attacker to obtain unauthorized access to restricted networks.
Original NVD description (English source)
Buffer overflow vulnerability exists in the affected interface of HPE Networking Instant ON that could allow an unauthenticated remote attacker to run arbitrary code on the underlying host. Successful exploitation could allow an attacker to execute arbitrary code as a privileged user on the underlying operating system.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

