CVE-2026-76738
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Buffer Overflow in HPE Networking Instant On API

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: Hewlett Packard Enterprise (HPE)

Description
A buffer overflow vulnerability exists in the API endpoint of HPE Networking Instant On that could allow an authenticated attacker with administrative privileges to cause a denial of service. Successful exploitation could allow an attacker to interrupt the normal operation of the affected service, which recovers without manual intervention.

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Meta Information

Published
2026-09-29
Last Modified
2026-09-29
Generated
2026-09-30
AI Q&A
2026-09-29
EPSS Evaluated
N/A
NVD
CVE-2026-76738
EUVD
EUVD-2026-89357

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
hpe networking_instant_on *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a buffer overflow vulnerability in the API endpoint of HPE Networking Instant On. It allows an authenticated attacker with admin privileges to cause a denial of service by exploiting the buffer overflow, which can interrupt normal service operation. The service recovers automatically without manual intervention.

Impact Analysis

If exploited, this vulnerability could disrupt the availability of the HPE Networking Instant On service, leading to temporary outages or degraded performance. Since it requires admin privileges, the risk is limited to users with elevated access.

Mitigation Strategies

Since this vulnerability requires administrative privileges and causes a denial of service that recovers automatically, ensure only trusted users have administrative access. Monitor API endpoint logs for unusual activity and apply any available patches from HPE.

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