CVE-2026-5709: CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') in AWS Research and Engineering Studio (RES)
CVE-2026-5709 is a high-severity OS command injection vulnerability in AWS Research and Engineering Studio (RES) versions 2024. 10 through 2025. 12. 01. It arises from unsanitized input in the FileBrowser API, allowing a remote authenticated user to execute arbitrary commands on the cluster-manager EC2 instance. AWS has released a fix in RES version 2026. 03 and provides a mitigation patch for existing environments. This vulnerability requires authenticated access and does not have known exploits in the wild at this time.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-5709) involves improper neutralization of special elements used in OS commands (CWE-78) within the FileBrowser API of AWS Research and Engineering Studio (RES). Unsanitized input can be crafted by a remote authenticated actor to execute arbitrary commands on the cluster-manager EC2 instance. Affected versions include RES 2024.10 through 2025.12.01. AWS manages this as a cloud service and has issued an official patch in RES version 2026.03, along with mitigation patches for existing deployments.
Potential Impact
Successful exploitation allows a remote authenticated user to execute arbitrary OS commands on the cluster-manager EC2 instance, potentially leading to full compromise of the affected instance. This impacts confidentiality, integrity, and availability of the system. There are no known exploits in the wild currently.
Mitigation Recommendations
AWS manages remediation for this cloud-hosted service. Users should upgrade to RES version 2026.03 or apply the corresponding mitigation patch provided by AWS to their existing environment. Check the AWS security bulletin at https://aws.amazon.com/security/security-bulletins/2026-014-aws/ for the latest remediation guidance and patch availability.
CVE-2026-5709: CWE-78 Improper neutralization of special elements used in an OS command ('OS command injection') in AWS Research and Engineering Studio (RES)
Description
CVE-2026-5709 is a high-severity OS command injection vulnerability in AWS Research and Engineering Studio (RES) versions 2024. 10 through 2025. 12. 01. It arises from unsanitized input in the FileBrowser API, allowing a remote authenticated user to execute arbitrary commands on the cluster-manager EC2 instance. AWS has released a fix in RES version 2026. 03 and provides a mitigation patch for existing environments. This vulnerability requires authenticated access and does not have known exploits in the wild at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-5709) involves improper neutralization of special elements used in OS commands (CWE-78) within the FileBrowser API of AWS Research and Engineering Studio (RES). Unsanitized input can be crafted by a remote authenticated actor to execute arbitrary commands on the cluster-manager EC2 instance. Affected versions include RES 2024.10 through 2025.12.01. AWS manages this as a cloud service and has issued an official patch in RES version 2026.03, along with mitigation patches for existing deployments.
Potential Impact
Successful exploitation allows a remote authenticated user to execute arbitrary OS commands on the cluster-manager EC2 instance, potentially leading to full compromise of the affected instance. This impacts confidentiality, integrity, and availability of the system. There are no known exploits in the wild currently.
Mitigation Recommendations
AWS manages remediation for this cloud-hosted service. Users should upgrade to RES version 2026.03 or apply the corresponding mitigation patch provided by AWS to their existing environment. Check the AWS security bulletin at https://aws.amazon.com/security/security-bulletins/2026-014-aws/ for the latest remediation guidance and patch availability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- AMZN
- Date Reserved
- 2026-04-06T16:11:19.793Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://aws.amazon.com/security/security-bulletins/2026-014-aws/","vendor":"AWS"}]
Threat ID: 69d4297c0a160ebd92e00951
Added to database: 4/6/2026, 9:45:32 PM
Last enriched: 4/14/2026, 4:02:49 PM
Last updated: 5/22/2026, 8:49:08 AM
Views: 99
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