CVE-2026-8049

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory published 2026-06-18. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

In SignalRGB versions prior to 1.3.7.0, the \\.\SignalIo device object is created without an explicit SDDL security descriptor and without FILE_DEVICE_SECURE_OPEN. This results in overly permissive default access control, allowing any authenticated local user to obtain a handle to the device and issue privileged IOCTLs.

CVSS v3
5.3
EG Score
5.3(medium)
EG Risk
28(Track)
EG Risk 28/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 22, 2026

Advisory Details (1)

Auto-updated Jun 18, 2026
No patch confirmed yet. Sources: cert.
cert

VU#380058 - SignalRGB kernel driver contains improper access control and IOCTL vulnerabilities

https://kb.cert.org/vuls/id/380058

Vendor Advisories for CVE-2026-8049(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 43× 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.

Showing the most recent 100 of 163 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-8049?
CVE-2026-8049 is a medium vulnerability published on June 17, 2026. In SignalRGB versions prior to 1.3.7.0, the \\.\SignalIo device object is created without an explicit SDDL security descriptor and without FILEDEVICESECURE_OPEN. This results in overly permissive default access control, allowing any authenticated local user to obtain a handle to the device and…
When was CVE-2026-8049 disclosed?
CVE-2026-8049 was first published in the National Vulnerability Database on June 17, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8049 actively exploited?
CVE-2026-8049 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.5% of all scored CVEs.
What is the CVSS score of CVE-2026-8049?
CVE-2026-8049 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-8049?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8049, 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

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