CVE-2026-16053

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

Score 8.5 from GitHub Security Advisory (severity: HIGH) published 2026-08-11. a secondary CVSS source baseline 8.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.5Exploit: None knownExposed: 0

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

Zohocorp ManageEngine M365 Manager Plus and M365 Security Plus versions below 4820 are affected to Authenticated Path Traversal vulnerability in Exchange Online backup module.

CVSS v3
8.5
EG Score
8.5(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: 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
Severity85% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
61%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 31, 2026

Advisory Details (1)

Auto-updated Aug 11, 2026
No patch confirmed yet.
generic

CVE-2026-16053: Authenticated path traversal vulnerability in M365 Manager Plus and M365 Security Plus

https://www.manageengine.com/microsoft-365-management-reporting/CVE-2026-16053.html

Vendor Advisories for CVE-2026-16053(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 22× in last 7d / 106× 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 148 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-16053?
CVE-2026-16053 is a high vulnerability published on August 11, 2026. Zohocorp ManageEngine M365 Manager Plus and M365 Security Plus versions below 4820 are affected to Authenticated Path Traversal vulnerability in Exchange Online backup module.
When was CVE-2026-16053 disclosed?
CVE-2026-16053 was first published in the National Vulnerability Database on August 11, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-16053 actively exploited?
CVE-2026-16053 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 39.0% of all scored CVEs.
What is the CVSS score of CVE-2026-16053?
CVE-2026-16053 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-16053?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-16053, 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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