High severity · published Sep 29, 2026
CVE-2026-76726
Authentication Bypass Leading to Unauthorized Network Access in HPE Networking Instant ON API Endpoint
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
Instant ON · Hewlett Packard Enterprise (HPE)
0.0.0.0 through 3.4.1.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76726
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76726
support.hpe.com
https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05150en_us&docLocale=en_US
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9.8
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CVE-2026-76724
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CVE-2026-76723
Unauthenticated Adjacent Buffer Overflow Vulnerabilities lead to Remote Code Execution in HPE Networking Instant ON APS