Dell ECS, ObjectScale Hit by Critical Hard-Coded Credential Flaw
The National Vulnerability Database has disclosed CVE-2026-40636, a critical use of hard-coded credentials vulnerability affecting Dell ECS versions 3.8.1.0 through 3.8.1.7 and Dell ObjectScale versions prior to 4.3.0.0. This flaw carries a CVSS score of 9.8, signaling maximum severity.
An unauthenticated attacker with local access could exploit this vulnerability, gaining immediate filesystem access. The implications are severe: hard-coded credentials are a gift to attackers, bypassing standard authentication mechanisms entirely. This isn’t a complex exploit; it’s a fundamental security failure that provides a direct route to sensitive data.
Defenders must prioritize patching. The National Vulnerability Database indicates that this vulnerability allows for complete compromise of confidentiality, integrity, and availability. Leaving this unpatched is an open invitation for a critical breach, with attackers able to move laterally and exfiltrate data with ease.
What This Means For You
- If your organization uses Dell ECS versions 3.8.1.0 through 3.8.1.7 or Dell ObjectScale versions prior to 4.3.0.0, you are exposed to a critical filesystem access vulnerability. Immediately identify all affected instances and patch to the recommended versions. Audit systems for any signs of unauthorized local access or suspicious activity, as this flaw allows unauthenticated attackers direct entry.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-40636 - Dell ECS/ObjectScale Hard-Coded Credential Filesystem Access
title: CVE-2026-40636 - Dell ECS/ObjectScale Hard-Coded Credential Filesystem Access
id: scw-2026-05-11-ai-1
status: experimental
level: critical
description: |
Detects access to specific scripts or binaries that are known to contain hard-coded credentials in vulnerable versions of Dell ECS and ObjectScale. This access could indicate an attacker attempting to leverage these credentials for unauthorized filesystem access.
author: SCW Feed Engine (AI-generated)
date: 2026-05-11
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-40636/
tags:
- attack.privilege_escalation
- attack.t1078.004
logsource:
category: file_access
detection:
selection:
TargetFilename|contains:
- '/opt/ecs/bin/admin.sh'
- '/usr/local/bin/objectscale_admin'
EventType: 'access'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-40636 | Use After Free | Dell ECS versions 3.8.1.0 through 3.8.1.7 |
| CVE-2026-40636 | Use After Free | Dell ObjectScale versions prior to 4.3.0.0 |
| CVE-2026-40636 | Use After Free | Use of hard-coded credentials vulnerability |
| CVE-2026-40636 | Use After Free | Unauthenticated attacker with local access leading to filesystem access |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 11, 2026 at 13:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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