High severity · published Apr 6, 2026
CVE-2026-5709
AWS Research and Engineering Studio (RES) FileBrowser Command Injection
8.8
CVSS
1.1%
EPSS
No
On KEV
Description
Unsanitized input in the FileBrowser API in AWS Research and Engineering Studio (RES) version 2024.10 through 2025.12.01 might allow a remote authenticated actor to execute arbitrary commands on the cluster-manager EC2 instance via crafted input when using the FileBrowser functionality.
To remediate this issue, users are advised to upgrade to RES version 2026.03 or apply the corresponding mitigation patch to their existing environment.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
Research and Engineering Studio (RES) · AWS
2024.10 through 2025.12.01 · source: vendor
RA
Research And Engineering Studio · Amazon
before 2026.03 · source: NVD
Affected product
RA
Research and Engineering Studio (RES)
AWS
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5709
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5709
Vendor Advisory
https://aws.amazon.com/security/security-bulletins/2026-014-aws/
Exploit
https://github.com/aws/res/issues/150
Release Notes
https://github.com/aws/res/releases/tag/2026.03
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