CVE-2026-76699: A buffer overflow vulnerability exists in a system service within the underlying operating system of HPE Netwo

Q: How do I fix CVE-2026-76699?

edgeconnect sd-wan orchestrator: upgrade to 9.4.11, 9.5.9, 9.6.4; edgeconnect operating system: upgrade to 9.4.9.0, 9.5.9.0, 9.6.4.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-76699 being exploited?

CVE-2026-76699 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-76699 affect?

CVE-2026-76699 affects edgeconnect sd-wan orchestrator, edgeconnect operating system. Severity is medium (CVSS 6.4). 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 e

Q: How urgent is CVE-2026-76699?

Priority 25/100. No elevated risk signals yet.

Routine

MEDIUM 6.4UPGRADEUPGRADE

CVE-2026-76699 is a medium-severity flaw (CVSS 6.4) affecting edgeconnect sd-wan orchestrator, edgeconnect operating system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.4 (Medium)
Attack vector	Adjacent network
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 88%)
CISA exploited list	No
Weakness	CWE-120
Published	2026-09-15
Last modified	2026-09-28

Publisher (CNA): Hewlett Packard Enterprise (HPE) · Vendor: arubanetworks · hpe

Last updated 2026-09-28 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-15 20:17 UTCPublished CVE record published
2026-09-28 13:52 UTCUpdated Record last modified

arubanetworks edgeconnect sd-wan orchestrator UPGRADE

Affected: >= 9.4.0 and < 9.4.11 · >= 9.5.0 and < 9.5.9 · >= 9.6.0 and < 9.6.4 · 9.7.0

Fixed in: 9.4.11, 9.5.9, 9.6.4

Safe to downgrade to: a release before 9.4.0

1. Check installed version

apt-cache policy edgeconnect-sd-wan-orchestrator || rpm -q edgeconnect-sd-wan-orchestrator || edgeconnect-sd-wan-orchestrator --version

2. UPGRADE to 9.4.11 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade edgeconnect-sd-wan-orchestrator

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade edgeconnect-sd-wan-orchestrator

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 9.4.0 (Debian / Ubuntu)

apt-cache madison edgeconnect-sd-wan-orchestrator sudo apt install edgeconnect-sd-wan-orchestrator=<VERSION_BEFORE_9.4.0> sudo apt-mark hold edgeconnect-sd-wan-orchestrator

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list edgeconnect-sd-wan-orchestrator sudo dnf downgrade edgeconnect-sd-wan-orchestrator-<VERSION_BEFORE_9.4.0> sudo dnf versionlock add edgeconnect-sd-wan-orchestrator

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

hpe edgeconnect operating system UPGRADE

Affected: >= 9.4.0.0 and < 9.4.9.0 · >= 9.5.0.0 and < 9.5.9.0 · >= 9.6.0.0 and < 9.6.4.0 · 9.7.0.0

Fixed in: 9.4.9.0, 9.5.9.0, 9.6.4.0

Safe to downgrade to: a release before 9.4.0.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-76699?

edgeconnect sd-wan orchestrator: upgrade to 9.4.11, 9.5.9, 9.6.4; edgeconnect operating system: upgrade to 9.4.9.0, 9.5.9.0, 9.6.4.0. Exact commands for each OS are on this page.

Is CVE-2026-76699 being exploited?

CVE-2026-76699 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-76699 affect?

CVE-2026-76699 affects edgeconnect sd-wan orchestrator, edgeconnect operating system. Severity is medium (CVSS 6.4). 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 e

How urgent is CVE-2026-76699?

Priority 25/100. No elevated risk signals yet.

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References

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