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 involve user interaction. No known exploits in the wild have been reported. AWS manages remediation for this cloud-hosted service.
AI Analysis
Technical Summary
The vulnerability CVE-2026-5709 affects AWS Research and Engineering Studio (RES) versions 2024.10 through 2025.12.01. It is caused by improper neutralization of special elements in the FileBrowser API, leading to OS command injection (CWE-78). A remote authenticated actor can leverage crafted input to execute arbitrary commands on the cluster-manager EC2 instance. The CVSS 3.1 base score is 8.8, indicating high severity with network attack vector, low attack complexity, requiring privileges but no user interaction, and impacts confidentiality, integrity, and availability. AWS has released RES version 2026.03 containing the fix and provides a mitigation patch. As RES is a cloud service, AWS manages remediation server-side. The vendor advisory is available at https://aws.amazon.com/security/security-bulletins/2026-014-aws/.
Potential Impact
Successful exploitation allows a remote authenticated user to execute arbitrary OS commands on the cluster-manager EC2 instance within the AWS RES environment. This can lead to full compromise of the instance, affecting confidentiality, integrity, and availability of the system and potentially the broader environment managed by RES.
Mitigation Recommendations
AWS has released an official fix in RES version 2026.03 and provides a mitigation patch for existing deployments. Since RES is a cloud-hosted service, AWS manages remediation server-side. Users should upgrade to version 2026.03 or apply the provided patch as recommended in the AWS security bulletin at https://aws.amazon.com/security/security-bulletins/2026-014-aws/. No additional action is required beyond applying the official fix or patch.
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 involve user interaction. No known exploits in the wild have been reported. AWS manages remediation for this cloud-hosted service.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-5709 affects AWS Research and Engineering Studio (RES) versions 2024.10 through 2025.12.01. It is caused by improper neutralization of special elements in the FileBrowser API, leading to OS command injection (CWE-78). A remote authenticated actor can leverage crafted input to execute arbitrary commands on the cluster-manager EC2 instance. The CVSS 3.1 base score is 8.8, indicating high severity with network attack vector, low attack complexity, requiring privileges but no user interaction, and impacts confidentiality, integrity, and availability. AWS has released RES version 2026.03 containing the fix and provides a mitigation patch. As RES is a cloud service, AWS manages remediation server-side. The vendor advisory is available at https://aws.amazon.com/security/security-bulletins/2026-014-aws/.
Potential Impact
Successful exploitation allows a remote authenticated user to execute arbitrary OS commands on the cluster-manager EC2 instance within the AWS RES environment. This can lead to full compromise of the instance, affecting confidentiality, integrity, and availability of the system and potentially the broader environment managed by RES.
Mitigation Recommendations
AWS has released an official fix in RES version 2026.03 and provides a mitigation patch for existing deployments. Since RES is a cloud-hosted service, AWS manages remediation server-side. Users should upgrade to version 2026.03 or apply the provided patch as recommended in the AWS security bulletin at https://aws.amazon.com/security/security-bulletins/2026-014-aws/. No additional action is required beyond applying the official fix or patch.
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: 4/6/2026, 10:00:28 PM
Last updated: 4/7/2026, 3:24:24 AM
Views: 22
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