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VulnerabilityPublished

CVE-2026-5709: AWS Research and Engineering Studio (RES) · OS Command Injection

Affects AWS Research and Engineering Studio (RES)Source CVE Database V5

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Not known to be exploited · CVSS 8.8 High · patch available : patch AWS Research and Engineering Studio (RES) soon.

Data as of 30 Oct 2026, 06:59 UTC

CVSS 3.1 base score
8.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.0% chance of exploitation in 30 days – higher than 65% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
AWSResearch and Engineering Studio (RES)Affected
  • >=2024.10 <=2025.12.01
Fixed in–
GitHubaws/respkg:github/aws/resOther threatsAffected
  • =2024.10
  • <=2025.12.01
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

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.

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.

References

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