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PatchSiren cyber security CVE debrief

CVE-2026-5707 AWS CVE debrief

CVE-2026-5707 is a high-severity vulnerability in AWS Research and Engineering Studio (RES) that allows remote authenticated actors to execute arbitrary OS commands as root on the virtual desktop host. The issue arises from unsanitized input in the virtual desktop session name handling. Affected versions include RES 2025.03 through 2025.12.01. Users are advised to upgrade to RES version 2026.03 or apply the corresponding mitigation patch.

Vendor
AWS
Product
Research and Engineering Studio (RES)
CVSS
HIGH 8.7
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-06
Original CVE updated
2026-07-24
Advisory published
2026-04-06
Advisory updated
2026-07-24

Who should care

System administrators and security teams responsible for AWS Research and Engineering Studio (RES) should be aware of this vulnerability. RES users, especially those with remote access or authentication, are at risk. Security practitioners and compliance officers should also take note due to the high CVSS score of 8.7.

Technical summary

The vulnerability exists in the virtual desktop session name handling of AWS Research and Engineering Studio (RES). An unsanitized input allows remote authenticated actors to execute arbitrary OS commands as root on the virtual desktop host. The CVSS:4.0 vector is AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. Affected versions are RES 2025.03 through 2025.12.01.

Defensive priority

High priority due to the CVSS score of 8.7 and the potential for remote authenticated exploitation.

Recommended defensive actions

  • Upgrade to RES version 2026.03
  • Apply the corresponding mitigation patch to existing environments
  • Review and restrict access to virtual desktop sessions
  • Monitor for suspicious activity related to RES
  • Perform regular security audits and vulnerability assessments

Evidence notes

The CVE record was published on 2026-04-06T22:16:25.263Z and last modified on 2026-07-24T09:10:00.153Z. The NVD entry is currently Analyzed. Vendor advisory and mitigation patches are available. Evidence from the CVE record and NVD entry indicates a high-severity vulnerability in AWS Research and Engineering Studio (RES) versions 2025.03 through 2025.12.01. Limited source detail suggests verifying affected deployments, reviewing official advisories, and planning vendor-supported updates or mitigations. Defenders should monitor for suspicious activity and perform regular security audits.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-5707 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-5707

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-5707 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-5707

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://aws.amazon.com/security/security-bulletins/2026-014-aws/

    ff89ba41-3aa1-4d27-914a-91399e9639e5 - Vendor Advisory

  • Source reference

    Unverified legacy reference

    URL: https://github.com/aws/res/issues/151

    ff89ba41-3aa1-4d27-914a-91399e9639e5 - Exploit, Issue Tracking

  • Mitigation or vendor reference

    Unverified legacy reference

    URL: https://github.com/aws/res/releases/tag/2026.03

    ff89ba41-3aa1-4d27-914a-91399e9639e5 - Release Notes

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.