Authenticated denial of service via API format string
Published Sep 29, 2026 · Updated Sep 29, 2026
A format string flaw in HPE Networking Instant On access points 3.4.1.0 and earlier allows remote authenticated users to disrupt service. The affected AP API endpoint mishandles modified input as a format string and corrupts memory; the specific endpoint and formatting call are not publicly identified. High-privilege API access is required, and the reported outcomes include denial of service and remote code execution in the affected function.
Summary
What happened
A format string flaw in HPE Networking Instant On access points 3.4.1.0 and earlier allows remote authenticated users to disrupt service. The affected AP API endpoint mishandles modified input as a format string and corrupts memory; the specific endpoint and formatting call are not publicly identified. High-privilege API access is required, and the reported outcomes include denial of service and remote code execution in the affected function.
The record
- CVE
- CVE-2026-76729
- Published
- Sep 29, 2026
- Updated
- Sep 29, 2026
- Vendor
- Hewlett Packard Enterprise (HPE)
- Product
- HPE Networking Instant On
- Classifications
- T1499.004
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Sep 29, 2026CVE publishedPublication date reported by the CVE source.
- Sep 29, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0.0.0.0 <=3.4.1.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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