CVE-2026-7791

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-05-05. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
2.3%
KEV
Not listed

Published

May 4, 2026

Last Modified

May 5, 2026

Advisory Details (1)

Auto-updated May 4, 2026
No patch confirmed yet.
generic

CVE-2026-7791 - Local Privilege Escalation via TOCTOU Race Condition in Amazon WorkSpaces Skylight Agent

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

Vendor Advisories for CVE-2026-7791(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 58× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 02:31 UTCEPSS rescore
  6. 2026-07-05 02:30 UTCEPSS rescore
  7. 2026-07-04 06:31 UTCEPSS rescore
  8. 2026-07-04 06:31 UTCEPSS rescore
  9. 2026-06-29 14:06 UTCEPSS rescore
  10. 2026-06-28 04:56 UTCEPSS rescore
  11. 2026-06-27 03:08 UTCEPSS rescore
  12. 2026-06-25 13:50 UTCEPSS rescore
  13. 2026-06-24 14:05 UTCEPSS rescore
  14. 2026-06-23 21:33 UTCEPSS rescore
  15. 2026-06-22 14:25 UTCEPSS rescore
  16. 2026-06-21 14:56 UTCEPSS rescore
  17. 2026-06-21 01:59 UTCEPSS rescore
  18. 2026-06-19 19:26 UTCEPSS rescore
  19. 2026-06-18 17:52 UTCEPSS rescore
  20. 2026-06-17 17:53 UTCEPSS rescore
  21. 2026-06-16 17:53 UTCEPSS rescore
  22. 2026-06-15 17:49 UTCEPSS rescore
  23. 2026-06-15 17:49 UTCEPSS rescore
  24. 2026-06-14 23:18 UTCEPSS rescore
  25. 2026-06-14 19:44 UTCEG score recompute
Show 75 more
  1. 2026-06-14 19:44 UTCGHSA enrichment
  2. 2026-06-14 08:02 UTCEG score recompute
  3. 2026-06-14 08:02 UTCGHSA enrichment
  4. 2026-06-13 23:00 UTCEPSS rescore
  5. 2026-06-13 02:28 UTCEG score recompute
  6. 2026-06-13 02:28 UTCGHSA enrichment
  7. 2026-06-12 23:12 UTCEPSS rescore
  8. 2026-06-12 23:12 UTCEPSS rescore
  9. 2026-06-12 10:11 UTCEG score recompute
  10. 2026-06-12 10:11 UTCGHSA enrichment
  11. 2026-06-11 22:11 UTCEG score recompute
  12. 2026-06-11 22:11 UTCGHSA enrichment
  13. 2026-06-11 14:00 UTCEPSS rescore
  14. 2026-06-11 10:29 UTCEG score recompute
  15. 2026-06-11 10:29 UTCGHSA enrichment
  16. 2026-06-10 22:37 UTCEG score recompute
  17. 2026-06-10 22:37 UTCGHSA enrichment
  18. 2026-06-10 22:19 UTCEPSS rescore
  19. 2026-06-10 13:22 UTCEPSS rescore
  20. 2026-06-10 10:54 UTCEG score recompute
  21. 2026-06-10 10:54 UTCGHSA enrichment
  22. 2026-06-09 23:12 UTCEG score recompute
  23. 2026-06-09 23:12 UTCGHSA enrichment
  24. 2026-06-09 10:14 UTCEG score recompute
  25. 2026-06-09 10:14 UTCGHSA enrichment
  26. 2026-06-08 22:32 UTCEG score recompute
  27. 2026-06-08 22:32 UTCGHSA enrichment
  28. 2026-06-08 14:17 UTCEPSS rescore
  29. 2026-06-08 06:11 UTCEG score recompute
  30. 2026-06-08 06:11 UTCGHSA enrichment
  31. 2026-06-07 18:29 UTCEG score recompute
  32. 2026-06-07 18:29 UTCGHSA enrichment
  33. 2026-06-07 15:25 UTCEPSS rescore
  34. 2026-06-07 06:47 UTCEG score recompute
  35. 2026-06-07 06:47 UTCGHSA enrichment
  36. 2026-06-06 19:05 UTCEG score recompute
  37. 2026-06-06 19:05 UTCGHSA enrichment
  38. 2026-06-06 13:47 UTCEPSS rescore
  39. 2026-06-06 07:23 UTCEG score recompute
  40. 2026-06-06 07:23 UTCGHSA enrichment
  41. 2026-06-05 22:47 UTCEPSS rescore
  42. 2026-06-05 19:41 UTCEG score recompute
  43. 2026-06-05 19:41 UTCGHSA enrichment
  44. 2026-06-05 07:56 UTCEG score recompute
  45. 2026-06-05 07:56 UTCGHSA enrichment
  46. 2026-06-05 06:10 UTCEPSS rescore
  47. 2026-06-04 20:05 UTCEG score recompute
  48. 2026-06-04 20:05 UTCGHSA enrichment
  49. 2026-06-04 08:23 UTCEG score recompute
  50. 2026-06-04 08:23 UTCGHSA enrichment
  51. 2026-06-03 20:37 UTCEG score recompute
  52. 2026-06-03 20:37 UTCGHSA enrichment
  53. 2026-06-03 08:55 UTCEG score recompute
  54. 2026-06-03 08:55 UTCGHSA enrichment
  55. 2026-06-02 21:12 UTCEG score recompute
  56. 2026-06-02 21:12 UTCGHSA enrichment
  57. 2026-06-02 20:13 UTCEPSS rescore
  58. 2026-06-02 09:29 UTCEG score recompute
  59. 2026-06-02 09:29 UTCGHSA enrichment
  60. 2026-06-01 21:47 UTCEG score recompute
  61. 2026-06-01 21:47 UTCGHSA enrichment
  62. 2026-06-01 13:52 UTCEPSS rescore
  63. 2026-06-01 09:57 UTCEG score recompute
  64. 2026-06-01 09:57 UTCGHSA enrichment
  65. 2026-05-31 22:30 UTCEPSS rescore
  66. 2026-05-31 00:16 UTCEPSS rescore
  67. 2026-05-29 13:44 UTCEPSS rescore
  68. 2026-05-27 13:40 UTCEPSS rescore
  69. 2026-05-27 13:40 UTCEPSS rescore
  70. 2026-05-26 07:18 UTCEPSS rescore
  71. 2026-05-21 22:43 UTCEPSS rescore
  72. 2026-05-20 22:38 UTCEPSS rescore
  73. 2026-05-20 14:32 UTCEG score recompute
  74. 2026-05-20 14:32 UTCGHSA enrichment
  75. 2026-05-20 11:22 UTCEPSS rescore

Frequently asked(5)

What is CVE-2026-7791?
CVE-2026-7791 is a high vulnerability published on May 4, 2026. 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…
When was CVE-2026-7791 disclosed?
CVE-2026-7791 was first published in the National Vulnerability Database on May 4, 2026, with the most recent update on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-7791 actively exploited?
CVE-2026-7791 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-7791?
CVE-2026-7791 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2026-7791?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-7791, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-7791

Explore →

Is Your Infrastructure Affected by CVE-2026-7791?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs