How severe is CVE-2026-7791?

CVE-2026-7791 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-7791 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-7791?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-7791 have an EU (EUVD) identifier?

Yes. CVE-2026-7791 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27149.

When was CVE-2026-7791 published?

CVE-2026-7791 was published on 2026-05-04 and last updated on 2026-06-17.

CVE-2026-7791

CVE-2026-7791 is a high-severity vulnerability with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-367.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.5
EPSS exploit prediction: 0% (2nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-27149
Weakness: CWE-367
Published: 2026-05-04
Last modified: 2026-06-17

Description

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 locations bypassing file system permission protections, leading to local privilege escalation to SYSTEM.

Frequently asked questions

What is 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 locations bypassing file system permission protections, leading to local privilege escalation to SYSTEM.
How severe is CVE-2026-7791?: CVE-2026-7791 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-7791 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (2nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-7791?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-7791 have an EU (EUVD) identifier?: Yes. CVE-2026-7791 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-27149.
When was CVE-2026-7791 published?: CVE-2026-7791 was published on 2026-05-04 and last updated on 2026-06-17.

References

https://aws.amazon.com/security/security-bulletins/2026-025-aws/

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