CVE-2026-20455

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-01. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:mediatek, epss, ghsa
Trending — 3 sources updated this week
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.

In geniezone, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10873936; Issue ID: MSV-6784.

CVSS v3
7.8
EG Score
7.8(medium)
EPSS
1.4%
KEV
Not listed

Published

June 1, 2026

Last Modified

June 2, 2026

Advisory Details (1)

Auto-updated Jun 4, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

June 2026

https://corp.mediatek.com/product-security-bulletin/June-2026

Vendor Advisories for CVE-2026-20455(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 13× in last 7d / 81× 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 153 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-20455?
CVE-2026-20455 is a high vulnerability published on June 1, 2026. In geniezone, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10873936; Issue ID: MSV-6784.
When was CVE-2026-20455 disclosed?
CVE-2026-20455 was first published in the National Vulnerability Database on June 1, 2026, with the most recent update on June 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-20455 actively exploited?
CVE-2026-20455 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-20455?
CVE-2026-20455 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-20455?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-20455, 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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