CVE-2026-53408

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-12. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.1Exploit: 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
8.1
EG Score
8.1(high)
EPSS
11.4%
KEV
Not listed

Published

June 12, 2026

Last Modified

June 16, 2026

References (1)

Vendor Advisories for CVE-2026-53408(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 34× in last 7d / 124× 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 124 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-53408?
CVE-2026-53408 is a high 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-2026-53408 disclosed?
CVE-2026-53408 was first published in the National Vulnerability Database on June 12, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53408 actively exploited?
CVE-2026-53408 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 11.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-53408?
CVE-2026-53408 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-53408?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53408, 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-2026-53408

Explore →

Is Your Infrastructure Affected by CVE-2026-53408?

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

Start Free Scan →Browse All CVEs