# CVE-2026-76691: HPE Networking EdgeConnect SD-WAN Gateway buffer overflow in API

Source: https://junglewise.ai/threats/cve-2026-76691-hpe-networking-edgeconnect-sd-wan-gateway-buffer-overflow-in-api  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-76691 · Severity: high · CVSS 7.2 · Published 2026-09-15

HPE's EdgeConnect SD-WAN Gateway is a network appliance that securely connects distributed branch offices and remote workers. A buffer overflow in its management API allows authenticated attackers to run arbitrary commands with elevated privileges on the underlying system, potentially compromising the gateway's integrity and gaining control over network traffic routing.

Technologies: [Hpe EdgeConnect SD-WAN Gateway](https://junglewise.ai/threats/technologies/edgeconnect-sd-wan-gateway). Vendors: [Hpe](https://junglewise.ai/threats/vendors/hpe).

## Quick answers

**Is CVE-2026-76691 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-76691 being exploited in the wild.

**How severe is CVE-2026-76691?** High severity, with a CVSS score of 7.2, published 15 September 2026.

**Which products and versions are affected?** Hpe EdgeConnect SD-WAN Gateway <UNKNOWN>.

**Is there a fix for CVE-2026-76691?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-76691 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-76691?** Check whether you run Hpe EdgeConnect SD-WAN Gateway at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is a buffer overflow affecting the API endpoint of HPE Networking EdgeConnect SD-WAN Gateways. Attack vectors require prior authentication, reducing immediate exposure to anonymous attackers. Successful exploitation allows an authenticated remote attacker to execute arbitrary commands with privileged access on the underlying operating system. The vulnerability is rooted in insufficient input validation or bounds checking in the API handler. Fix/patch availability should be confirmed via HPE's security advisories.

## Affected products

- HPE EdgeConnect SD-WAN Gateway <UNKNOWN>

## Timeline

- 2026-09-15: disclosed

## References

- [https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05135en_us&docLocale=en_US](https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05135en_us&docLocale=en_US)

## Related threats

- [HPE EdgeConnect SD-WAN Gateway information disclosure via memory access](https://junglewise.ai/threats/cve-2026-76707-hpe-edgeconnect-sd-wan-gateway-information-disclosure-via-memory)
- [HPE EdgeConnect denial of service in operating system](https://junglewise.ai/threats/cve-2026-76702-hpe-edgeconnect-denial-of-service-in-operating-system)
- [HPE EdgeConnect SD-WAN Gateway buffer overflow in system service](https://junglewise.ai/threats/cve-2026-76699-hpe-edgeconnect-sd-wan-gateway-buffer-overflow-in-system-service)
- [HPE Networking EdgeConnect SD-WAN Gateway information disclosure in web management interface](https://junglewise.ai/threats/cve-2026-76697-hpe-networking-edgeconnect-sd-wan-gateway-information-disclosure)
- [HPE EdgeConnect SD-WAN Gateway denial of service](https://junglewise.ai/threats/cve-2026-76696-hpe-edgeconnect-sd-wan-gateway-denial-of-service)