CVE-2026-76699 — Unauthenticated Buffer Overflow Vulnerability leads to Denial-of-Service in HPE Networking EdgeConnect SD-WAN Gateways
A buffer overflow vulnerability exists in a system service within the underlying operating system of HPE Networking EdgeConnect SD-WAN Gateways that could allow an unauthenticated adjacent attacker to cause a denial-of-service. Successful exploitation could allow an attacker to crash the impacted service and temporarily disrupting network operations.
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- Technical severity (medium)+3
The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.
CISA SSVC assessment CISA
Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.
First 24 hours
Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.
- Identify exposed assets running the affected vendor/product/version combinations (Arubanetworks Edgeconnect Sd-wan Orchestrator, Hewlett Packard Enterprise (HPE) EdgeConnect SD-WAN Gateways, Hpe Edgeconnect Operating System).
- No fix documented in the sources: reduce exposure and monitor the vendor advisory.
- Search available logs for exploit probes matching the vulnerability class (memory corruption), errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Arubanetworks | Edgeconnect Sd-wan Orchestrator | ≥ 9.4.0 and < 9.4.11≥ 9.5.0 and < 9.5.9≥ 9.6.0 and < 9.6.4version 9.7.0 | Vulnerable | NIST National Vulnerability Database |
| Hewlett Packard Enterprise (HPE) | EdgeConnect SD-WAN Gateways | ≥ 9.7.0.0 and ≤ 9.7.0.0≥ 9.6.0.0 and ≤ 9.6.3.1≥ 9.5.0.0 and ≤ 9.5.8.1≥ 9.4.0.0 and ≤ 9.4.8.2 | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Hpe | Edgeconnect Operating System | ≥ 9.4.0.0 and < 9.4.9.0≥ 9.5.0.0 and < 9.5.9.0≥ 9.6.0.0 and < 9.6.4.0version 9.7.0.0 | Vulnerable | NIST National Vulnerability Database |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
Every base score collected
Sources score independently and may disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Scored by |
|---|---|---|---|---|---|
| 6.4 | CVSS 3.1 | Medium | 1.6 | 4.7 | security-alert@hpe.com via NIST National Vulnerability Database |
| 6.4 | CVSS 3.1 | Medium | — | — | hpe via CVE Program (cve.org) e CISA ADP |
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H (score shown at the top: security-alert@hpe.com) Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Correlate service crashes/restarts with inbound traffic; repeated crashes may indicate attempts.
Timeline
What happened to this CVE, newest first.
- 2026
- Affected products added · hewlett packard enterprise (hpe)/edgeconnect sd-wan gateways
- SSVC assessment updated
- Record published
- CVSS changed · 6.4
- Source status changed · → Analyzed
- Record created in this database
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 1× Official description updated · Oct 15, 2026 – Oct 15, 2026
References
1 on the record
Elsewhere on this site
Related CVEs (same products)
- Medium CVE-2026-76707 Unauthenticated Information Disclosure in HPE Networking EdgeConnect SD-WAN Gateways Sep 15, 2026
- Medium CVE-2026-76705 Authenticated Buffer Overflow Vulnerability in an API Endpoint Leads to Remote Code Execution in HPE Networking EdgeConnect SD-WAN Gateways Sep 15, 2026
- Medium CVE-2026-76706 Unauthenticated Information Disclosure in EdgeConnect SD-WAN Orchestrator API allows exposure of sensitive data Sep 15, 2026
- Medium CVE-2026-76698 Authenticated Command Injection Vulnerability leads to Denial-of-Service in HPE Networking EdgeConnect SD-WAN Gateways Sep 15, 2026
- Medium CVE-2026-76701 Unauthenticated Sensitive Information Disclosure in HPE Networking EdgeConnect SD-WAN Gateways Sep 15, 2026
- Medium CVE-2026-76700 Unauthenticated Denial-of-Service Vulnerabilities in HPE Networking EdgeConnect SD-WAN Gateways Sep 15, 2026
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No FIRST EPSS score.
- No fixed version, patch or mitigation documented.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.
Answered from this record
Text assembled only from the fields above — no additional claims.
What should defenders know first?
CVE-2026-76699 is "Unauthenticated Buffer Overflow Vulnerability leads to Denial-of-Service in HPE Networking EdgeConnect SD-WAN Gateways", rated Medium. It affects Edgeconnect Sd-wan Orchestrator (Arubanetworks); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.4 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.
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