CVE-2026-5707 AWS CVE debrief

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.

Official resources