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No exploitation reportedAwaiting NVD analysis

CVE-2026-12591

Privilege Escalation

No exploitation reported by the sources we read.

  • Published2026-11-12
  • WeaknessCWE-862

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Zohocorp ManageEngine M365 Manager Plus versions below 4818 is affected by an authenticated technician may exploit insufficient permission validation in the delegated administration interface to escalate privileges beyond their intended scope, which could result in remote code execution during administrative processing.

Timeline

dates in UTC
  1. 2026-11-1206:55CVE publishedCNA

Versions per branch

Products declared by the CNA

As Zohocorp, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Zohocorp M365 Manager Plusother versions: not affected
    Affected
    • < 4818fixed in 4818custom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-12

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-12591 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-11-12
  • CNACVSS 3.19.92026-11-12
  • CNAweakness (CWE)CWE-8622026-11-12

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
2026-11-12
Last Modified
2026-11-12
NVD status
Received

Frequently asked questions

What is CVE-2026-12591?

Zohocorp ManageEngine M365 Manager Plus versions below 4818 is affected by an authenticated technician may exploit insufficient permission validation in the delegated administration interface to escalate privileges beyond their intended scope, which could result in remote code execution during administrative processing.

Is CVE-2026-12591 actively exploited?

Active exploitation of CVE-2026-12591 has not been confirmed.

What is the CVSS score for CVE-2026-12591?

CVE-2026-12591 has a CVSS v3 base score of 9.9 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

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