CVE-2026-16053

HIGHPre-NVD 8.58.5—
EchelonGraph scoreHIGH 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(high)
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
60%
KEV
Not listed

Published

August 11, 2026

Last Modified

August 11, 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 28× in last 7d / 42× 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.

  1. 2026-08-20 10:31 UTCGHSA enrichment
  2. 2026-08-19 22:44 UTCEG score recompute
  3. 2026-08-19 22:44 UTCGHSA enrichment
  4. 2026-08-19 17:03 UTCEPSS rescore
  5. 2026-08-19 10:57 UTCGHSA enrichment
  6. 2026-08-18 23:10 UTCEG score recompute
  7. 2026-08-18 23:10 UTCGHSA enrichment
  8. 2026-08-18 13:48 UTCEPSS rescore
  9. 2026-08-18 11:24 UTCGHSA enrichment
  10. 2026-08-17 23:37 UTCEG score recompute
  11. 2026-08-17 23:37 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-17 11:50 UTCGHSA enrichment
  14. 2026-08-17 00:04 UTCEG score recompute
  15. 2026-08-17 00:04 UTCGHSA enrichment
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 12:17 UTCEG score recompute
  18. 2026-08-16 12:17 UTCGHSA enrichment
  19. 2026-08-16 02:14 UTCEPSS rescore
  20. 2026-08-16 00:31 UTCGHSA enrichment
  21. 2026-08-15 12:44 UTCEG score recompute
  22. 2026-08-15 12:44 UTCGHSA enrichment
  23. 2026-08-15 01:30 UTCEPSS rescore
  24. 2026-08-15 00:51 UTCGHSA enrichment
  25. 2026-08-14 13:05 UTCGHSA enrichment
Show 17 more
  1. 2026-08-14 01:18 UTCEG score recompute
  2. 2026-08-14 01:18 UTCGHSA enrichment
  3. 2026-08-13 22:00 UTCEPSS rescore
  4. 2026-08-13 13:31 UTCGHSA enrichment
  5. 2026-08-13 01:44 UTCGHSA enrichment
  6. 2026-08-12 13:58 UTCEG score recompute
  7. 2026-08-12 13:58 UTCGHSA enrichment
  8. 2026-08-12 13:50 UTCEPSS rescore
  9. 2026-08-12 02:11 UTCGHSA enrichment
  10. 2026-08-11 14:24 UTCEG score recompute
  11. 2026-08-11 14:24 UTCGHSA enrichment
  12. 2026-08-11 13:42 UTCEPSS rescore
  13. 2026-08-11 13:32 UTCEG score recompute
  14. 2026-08-11 13:32 UTCGHSA enrichment
  15. 2026-08-11 07:25 UTCEG score recompute
  16. 2026-08-11 07:04 UTCEG score recompute
  17. 2026-08-11 07:03 UTCMITRE cvelistV5first tracked

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. 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 40.2% 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

Explore the affected products and dependency analysis for CVE-2026-16053

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