CVE-2026-53407

CRITICALNVD 9.88.1▼
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-12. NVD baseline CVSS 9.8; sources differ by 1.7.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

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

Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version 7.0.4 for Android and before 7.0.3 for iOS may allow an unauthenticated user to conduct an escalation of privilege via network access.

CVSS v3
9.8
EG Score
8.1(medium)
EPSS
13.8%
KEV
Not listed

Published

June 12, 2026

Last Modified

June 26, 2026

References (1)

Vendor Advisories for CVE-2026-53407(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 33× in last 7d / 128× 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 128 total refreshes for this CVE.

  1. 2026-07-07 01:01 UTCEG score recompute
  2. 2026-07-07 01:01 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 16:27 UTCEPSS rescore
  5. 2026-07-06 02:23 UTCEPSS rescore
  6. 2026-07-06 02:23 UTCEPSS rescore
  7. 2026-07-06 00:36 UTCEG score recompute
  8. 2026-07-06 00:36 UTCGHSA enrichment
  9. 2026-07-05 12:00 UTCEG score recompute
  10. 2026-07-05 12:00 UTCGHSA enrichment
  11. 2026-07-05 02:31 UTCEPSS rescore
  12. 2026-07-05 02:30 UTCEPSS rescore
  13. 2026-07-04 23:30 UTCEG score recompute
  14. 2026-07-04 23:30 UTCGHSA enrichment
  15. 2026-07-04 10:51 UTCEG score recompute
  16. 2026-07-04 10:50 UTCGHSA enrichment
  17. 2026-07-04 06:31 UTCEPSS rescore
  18. 2026-07-04 06:31 UTCEPSS rescore
  19. 2026-07-03 19:58 UTCEG score recompute
  20. 2026-07-03 19:58 UTCGHSA enrichment
  21. 2026-07-03 07:28 UTCEG score recompute
  22. 2026-07-03 07:28 UTCGHSA enrichment
  23. 2026-07-02 18:42 UTCEG score recompute
  24. 2026-07-02 18:42 UTCGHSA enrichment
  25. 2026-07-02 06:12 UTCEG score recompute
Show 75 more
  1. 2026-07-02 06:12 UTCGHSA enrichment
  2. 2026-07-01 17:40 UTCEG score recompute
  3. 2026-07-01 17:40 UTCGHSA enrichment
  4. 2026-07-01 15:07 UTCEPSS rescore
  5. 2026-07-01 05:05 UTCEG score recompute
  6. 2026-07-01 05:05 UTCGHSA enrichment
  7. 2026-06-30 16:17 UTCEG score recompute
  8. 2026-06-30 16:17 UTCGHSA enrichment
  9. 2026-06-30 03:45 UTCEG score recompute
  10. 2026-06-30 03:45 UTCGHSA enrichment
  11. 2026-06-29 15:11 UTCEG score recompute
  12. 2026-06-29 15:11 UTCGHSA enrichment
  13. 2026-06-29 14:06 UTCEPSS rescore
  14. 2026-06-29 14:06 UTCEPSS rescore
  15. 2026-06-29 02:38 UTCEG score recompute
  16. 2026-06-29 02:38 UTCGHSA enrichment
  17. 2026-06-28 14:08 UTCEG score recompute
  18. 2026-06-28 14:08 UTCGHSA enrichment
  19. 2026-06-28 14:07 UTCEPSS rescore
  20. 2026-06-28 04:56 UTCEPSS rescore
  21. 2026-06-28 04:56 UTCEPSS rescore
  22. 2026-06-28 01:38 UTCEG score recompute
  23. 2026-06-28 01:38 UTCGHSA enrichment
  24. 2026-06-27 13:06 UTCEG score recompute
  25. 2026-06-27 13:06 UTCGHSA enrichment
  26. 2026-06-27 03:08 UTCEPSS rescore
  27. 2026-06-27 00:36 UTCEG score recompute
  28. 2026-06-27 00:35 UTCGHSA enrichment
  29. 2026-06-26 21:42 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
  30. 2026-06-26 12:03 UTCEG score recompute
  31. 2026-06-26 12:03 UTCGHSA enrichment
  32. 2026-06-25 21:41 UTCEG score recompute
  33. 2026-06-25 21:41 UTCGHSA enrichment
  34. 2026-06-25 13:49 UTCEPSS rescore
  35. 2026-06-25 09:11 UTCEG score recompute
  36. 2026-06-25 09:11 UTCGHSA enrichment
  37. 2026-06-24 20:40 UTCEG score recompute
  38. 2026-06-24 20:40 UTCGHSA enrichment
  39. 2026-06-24 14:05 UTCEPSS rescore
  40. 2026-06-24 07:55 UTCEG score recompute
  41. 2026-06-24 07:55 UTCGHSA enrichment
  42. 2026-06-23 21:33 UTCEPSS rescore
  43. 2026-06-23 21:33 UTCEPSS rescore
  44. 2026-06-23 19:22 UTCEG score recompute
  45. 2026-06-23 19:22 UTCGHSA enrichment
  46. 2026-06-23 06:51 UTCEG score recompute
  47. 2026-06-23 06:51 UTCGHSA enrichment
  48. 2026-06-22 18:20 UTCEG score recompute
  49. 2026-06-22 18:20 UTCGHSA enrichment
  50. 2026-06-22 14:25 UTCEPSS rescore
  51. 2026-06-22 14:25 UTCEPSS rescore
  52. 2026-06-22 05:50 UTCEG score recompute
  53. 2026-06-22 05:49 UTCGHSA enrichment
  54. 2026-06-21 17:19 UTCEG score recompute
  55. 2026-06-21 17:18 UTCGHSA enrichment
  56. 2026-06-21 14:56 UTCEPSS rescore
  57. 2026-06-21 14:56 UTCEPSS rescore
  58. 2026-06-21 04:48 UTCEG score recompute
  59. 2026-06-21 04:48 UTCGHSA enrichment
  60. 2026-06-21 01:59 UTCEPSS rescore
  61. 2026-06-21 01:59 UTCEPSS rescore
  62. 2026-06-20 16:18 UTCEG score recompute
  63. 2026-06-20 16:17 UTCGHSA enrichment
  64. 2026-06-20 03:45 UTCEG score recompute
  65. 2026-06-20 03:44 UTCGHSA enrichment
  66. 2026-06-19 19:26 UTCEPSS rescore
  67. 2026-06-19 19:26 UTCEPSS rescore
  68. 2026-06-19 15:00 UTCEG score recompute
  69. 2026-06-19 15:00 UTCGHSA enrichment
  70. 2026-06-19 02:22 UTCEG score recompute
  71. 2026-06-19 02:21 UTCGHSA enrichment
  72. 2026-06-18 17:52 UTCEPSS rescore
  73. 2026-06-18 17:52 UTCEPSS rescore
  74. 2026-06-18 13:51 UTCEG score recompute
  75. 2026-06-18 13:51 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-53407?
CVE-2026-53407 is a critical vulnerability published on June 12, 2026. Improper Authorization in Handler for Custom URL Scheme in Zoom Workplace before version 7.0.4 for Android and before 7.0.3 for iOS may allow an unauthenticated user to conduct an escalation of privilege via network access.
When was CVE-2026-53407 disclosed?
CVE-2026-53407 was first published in the National Vulnerability Database on June 12, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53407 actively exploited?
CVE-2026-53407 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 13.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-53407?
CVE-2026-53407 has a CVSS v3 base score of 9.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 8.1.
How do I remediate CVE-2026-53407?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53407, 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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