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HPE EdgeConnect SD-WAN CVE-2026-44878

| EUVDEUVD-2026-46416 HIGH
Insecure Temporary File (CWE-377)
2026-07-21 hpe GHSA-4qh6-m8h4-cff3
7.2
CVSS 3.1 · Vendor: hpe
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Authenticate to ECOS management interface as admin
  2. Delivery
    Invoke vulnerable filesystem-access function
  3. Exploit
    Read sensitive system/config files
  4. Execution
    Modify or delete system data
  5. Impact
    Confidentiality and integrity loss on gateway

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Secure temp file creation
Exploitation Conditions

Exploitation requires an authenticated session with high administrative privileges (CVSS PR:H) to the ECOS web-based management interface, which must be network-reachable from the attacker (AV:N); no user interaction is needed (UI:N) and attack complexity is low (AC:L). The decisive limiting factor is the PR:H prerequisite: the attacker must already possess valid high-privilege admin credentials, so this cannot be exploited by anonymous or low-privileged users. Practical risk is therefore bounded to insiders or attackers who have already compromised administrator access, and is further limited where the management interface is confined to an isolated management network rather than broadly reachable.

Impact

The CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H yields 7.2 (High): network-reachable and low-complexity, but critically gated by PR:H, meaning the attacker must already hold high (administrative) privileges on the appliance. That single metric is the dominant risk modifier - it reduces this from a wormable pre-auth flaw to a privilege-boundary/post-compromise concern. No EPSS score was provided, so exploitation probability cannot be quantified; the issue is not in CISA KEV and no POC is referenced, so there is no evidence of active or public exploitation. No SSVC decision data was supplied. Net assessment: full C/I/A impact makes this serious once the precondition is met, but the PR:H requirement means realistic risk is limited to insider misuse or an attacker who has already obtained admin credentials - prioritize patching but it is not an emergency internet-facing exposure on its own.

Exploit ScenarioDerived

An attacker who has obtained high-privilege administrator credentials to an EdgeConnect gateway - a rogue insider, or an external actor who has already harvested admin credentials - logs into the web management interface and uses the vulnerable function to read sensitive files (such as configuration or credential material) and then modify or delete system files to disrupt or cover their tracks. The attack is network-based and low-complexity but hinges entirely on already holding administrative access; no public exploit code is currently identified.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
No patch listed yet 0.3% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 21, 2026

Filesystem access in the web-based management interface of HPE EdgeConnect SD-WAN Gateway (ECOS) allows an authenticated, highly privileged remote administrator to reach the underlying device filesystem beyond the intended management scope. Once exploited, an attacker can read sensitive files and tamper with or delete system data, undermining the confidentiality, integrity, and availability of the gateway. There is no public exploit identified at time of analysis and the issue is not listed in CISA KEV; it is a vendor-reported (HPE) information-disclosure and data-tampering flaw with a CVSS base score of 7.2.

RemediationAI

Apply the fixed ECOS release identified in HPE Security Bulletin hpesbnw05013en_us (https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05013en_us&docLocale=en_US); the exact patched version is not stated in the provided data, so the bulletin should be consulted directly for the target build. Because exploitation requires high privileges, the most effective compensating controls tighten who can reach and authenticate to the management interface: restrict the web management interface to a dedicated out-of-band management VLAN or trusted admin subnet and block it from general user and WAN-facing networks (trade-off: administrators must connect via the management path), enforce least-privilege by minimizing the number of accounts with high administrative rights and rotating/strengthening admin credentials, and enable audit logging and monitoring of management-interface file operations to detect abuse (trade-off: added log review overhead). These controls reduce exposure but do not remove the underlying flaw, so patching remains the primary fix.

Affected VersionsENISA

EdgeConnect SD-WAN Gateway (ECOS) 9.4.0.0 ≤9.4.6.0
EdgeConnect SD-WAN Gateway (ECOS) 9.5.0.0 ≤9.5.6.0
EdgeConnect SD-WAN Gateway (ECOS) 9.6.0.0 ≤9.6.1.0

Affected Packages

euvd edgeconnect_sd_wan_gateway_ecos no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

ECOS is the operating system running on HPE (formerly Silver Peak) EdgeConnect SD-WAN gateways, appliances that steer and optimize WAN traffic across branch and data-center sites. The vulnerability lives in the appliance's web-based management interface, which is intended to expose only a controlled configuration surface rather than raw filesystem access. The affected component per the CPE is cpe:2.3:a:hewlett_packard_enterprise_(hpe):edgeconnect_sd-wan_gateway_(ecos). No CWE was assigned in the input, but the described behavior - an authenticated management function that permits reading, altering, and deleting arbitrary files - is characteristic of improper access control combined with a path/file-access weakness (CWE-22 path traversal or CWE-284 improper access control class), where the management layer fails to confine operations to their intended files.

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Severity by source

Vendor (hpe) PRIMARY 7.2 HIGH
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
vuln.today AI 7.2 HIGH

Management interface is network-reachable (AV:N) and easy to exploit once in (AC:L), but requires existing high admin privileges (PR:H); file read plus tamper/delete gives full C:H/I:H/A:H with no scope change.

3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (hpe).

CVSS VectorVendor: hpe

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

A vulnerability in the web-based management interface of an ECOS device could allow a highly privileged, authenticated remote attacker to access the device's filesystem. Successful exploitation of this vulnerability could allow an attacker to access sensitive files and tamper with or delete system data.

Executive ViewAI

Why It Matters

HPE EdgeConnect SD-WAN Gateway (ECOS) contains a filesystem access vulnerability (CVE-2026-44878, CVSS 7.2) in the web-based management interface that allows highly privileged administrators to read sensitive files and modify or delete system data. Organizations running vulnerable ECOS instances face data disclosure and integrity compromise risks with no vendor patch currently available. Immediate mitigation requires restricting administrative access and monitoring for vendor remediation.

Business Impact: High
Compensating Controls

No vendor-released patch identified at time of analysis. Interim mitigations: (1) restrict management interface access to authorized administrator networks only via firewall or network segmentation; (2) require multi-factor authentication for all administrative accounts; (3) enable audit logging on web management interface and review logs for suspicious file-access patterns; (4) disable the web-based management interface entirely if alternative management methods (CLI, API with network restrictions) are available; (5) monitor HPE Security Bulletin channels for patch availability.

Threat Intelligence Overview

EPSS Score
0.3%
Top 75% exploitable
Prevalence
Medium
widely used SD-WAN appliance but specific to HPE/Silver Peak deployments
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.3%
Patch available No
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact
High

Priority Score

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

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