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CVE-2026-76729— Authenticated Format String Vulnerability allows Memory Corruption in HPE Networking Instant ON API Endpoint

Quick assessment

Affected
Hewlett Packard Enterprise (HPE) Instant ON
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HPE Networking Instant ON 接入点（AP）的 API 端点中存在格式化字符串漏洞，具有管理员权限的经过身份验证的远程攻击者可通过提供特制的输入导致内存损坏。成功利用该漏洞可使攻击者在受影响系统功能中引发拒绝服务（DoS）条件或实现远程代码执行。

CVSS 6.6 · Medium EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
Hewlett Packard Enterprise (HPE) Instant ON 0.0.0.0≤ 3.4.1.0 affected
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I. Basic Information for CVE-2026-76729

Vulnerability Information
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Vulnerability Title
Authenticated Format String Vulnerability allows Memory Corruption in HPE Networking Instant ON API Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
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 a modified input. Successful exploitation could allow an attacker to provoke a denial-of-service condition or remote code execution in the affected system function.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Hewlett Packard Enterprise (HPE) Instant ON 0.0.0.0 ~ 3.4.1.0 -

II. Public POCs for CVE-2026-76729

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III. Intelligence Information for CVE-2026-76729

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Other References for CVE-2026-76729 (1)

Same Patch Batch · Hewlett Packard Enterprise (HPE) · 2026-09-29 · 18 CVEs total

CVE-2026-76721 9.8 CRITICAL Unauthenticated Buffer Overflow Vulnerability leads to Remote Code Execution in HPE Networ
CVE-2026-76722 9.8 CRITICAL Uncontrolled Format String Vulnerabilities lead to Remote Code Execution or Denial-of-Serv
CVE-2026-76723 9.6 CRITICAL Unauthenticated Adjacent Buffer Overflow Vulnerabilities lead to Remote Code Execution in
CVE-2026-76724 9.6 CRITICAL Unauthenticated Adjacent Command Injection Vulnerability in HPE Networking Instant ON APs
CVE-2026-76725 9.6 CRITICAL Authentication Bypass in a Management Protocol of HPE Networking Instant ON APs
CVE-2026-76726 8.1 HIGH Authentication Bypass Leading to Unauthorized Network Access in HPE Networking Instant ON
CVE-2026-76728 7.2 HIGH Authenticated Server-Side Request Forgery Leading to Remote Code Execution in HPE Networki
CVE-2026-76727 7.2 HIGH Authenticated Command Injection Vulnerabilities in HPE Networking Instant ON
CVE-2026-76730 6.5 MEDIUM Improper PAPI Packet handling leads to unauthorized access in HPE Networking Instant ON AP
CVE-2026-76731 6.5 MEDIUM Authentication Bypass in the Captive Portal of HPE Networking Instant On
CVE-2026-76732 6.4 MEDIUM Authenticated Local Privilege Escalation Vulnerability in a Daemon of HPE Networking Insta
CVE-2026-76733 4.9 MEDIUM Authenticated Denial-of-Service Vulnerability in HPE Networking Instant On API Endpoint
CVE-2026-76734 4.8 MEDIUM Unauthenticated Memory Corruption Vulnerability leads to Denial-of-Service in HPE Networki
CVE-2026-76735 4.1 MEDIUM Authenticated Local Sensitive Information Disclosure in HPE Networking Instant On
CVE-2026-76736 3.3 LOW Authenticated Local Buffer Overflow Vulnerability leads to Denial-of-Service in HPE Networ
CVE-2026-76737 3.0 LOW Authenticated Local Path Traversal Vulnerability Leads to Denial-of-Service in HPE Network
CVE-2026-76738 2.7 LOW Authenticated Buffer Overflow Vulnerability in the API Endpoint of HPE Networking Instant

IV. Related Vulnerabilities

Same product: Instant ON
Same vendor: Hewlett Packard Enterprise (HPE)

V. Comments for CVE-2026-76729

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