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High CVSS 8.5

CVE-2026-16053

NVD analysis in progress

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

What this means

Exposure
Exploitable remotely over the network, with an ordinary user account and with no action from the victim.
Impact
An attacker can alter some data and take the service offline. The impact spreads beyond the vulnerable component into other parts of the system.
Weakness
A “../” sequence in a path lets an attacker climb the directory tree and reach other files.
Likelihood
Its EPSS score stays low: nothing points to imminent exploitation, which is no reason to leave it unpatched.

What to doFold into the next patch cycle.

Read automatically from the CVSS vector, the weakness type (CWE) and the EPSS score. The technical description above remains the one published by NIST.

Published
11 August 2026
CVSS
8.5 (v3.1) CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
EPSS
0.99% probability of exploitation within 30 days · above 60% of all CVEs
Weakness
CWE-23
Sources
nvd
References

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