What is CVE-2026-7791?

CVE-2026-7791 is a high-severity vulnerability in Amazon Workspaces, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.8/10. Published 2026-05-04.

How severe is CVE-2026-7791?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2026-7791 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Amazon Workspaces

CVE-2026-7791

Improper privilege management in the log rotation mechanism of the Skylight Workspace Config Service in Amazon WorkSpaces for Windows before 2.6.2034.0 allows a local non-admin authenticated user to place arbitrary files into arbitrary loc…

Vulnerability class: TOCTOU (Time-of-Check to Time-of-Use)

EPSS: 0.000 (0.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Amazon Workspaces — versions 2.6.2034.0

Weakness classification (CWE)

CWE-367 — Time-of-check Time-of-use (TOCTOU) Race Condition

Public proof-of-concept exploits

BenZamir/CVE-2026-7791

References

ff89ba41-3aa1-4d27-914a-91399e9639e5 (vendor-advisory)

Frequently asked questions

What is CVE-2026-7791?: CVE-2026-7791 is a high-severity vulnerability in Amazon Workspaces, classified under Time-of-check Time-of-use (TOCTOU) Race Condition. CVSS score: 7.8/10. Published 2026-05-04.
How severe is CVE-2026-7791?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2026-7791 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.