CVE-2021-3287
CRITICAL
9.8
CVSS Score
Published: April 22, 2021 at 12:58 PM UTC
Updated: June 17, 2026 at 04:04 AM UTC
1 product affected across 1 vendorManageengine Opmanager
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Severity
CRITICAL9.8
Exploit prediction
EPSS 51%
Description
Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 12.512.512.5 build12500012.5 build12500212.5 build12510012.5 build12510112.5 build12510212.5 build12510812.5 build12511012.5 build12511112.5 build12511212.5 build12511312.5 build12511412.5 build12511612.5 build12511712.5 build12511812.5 build12512012.5 build12512112.5 build12512312.5 build12512412.5 build12512512.5 build12513612.5 build12513712.5 build12513912.5 build12514012.5 build12514312.5 build12514412.5 build12514512.5 build12515612.5 build12515712.5 build12515812.5 build12515912.5 build12516112.5 build12516312.5 build12517412.5 build12517512.5 build12517612.5 build12517712.5 build12517812.5 build12518012.5 build12518112.5 build12519212.5 build12519312.5 build12519412.5 build12519512.5 build12519612.5 build12519712.5 build12519812.5 build12520112.5 build12520412.5 build12521212.5 build12521312.5 build12521412.5 build12521512.5 build12521612.5 build12522812.5 build12522912.5 build12523012.5 build12523112.5 build12523212.5 build12523312.5 build12531212.5 build12532312.5 build12532412.5 build12532612.5 build125328
Affected range stops below 12.5, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCExploitThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/164231/ManageEngine-OpManager-SumPDU-Java-Deserialization.htmlx_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://www.manageengine.com/network-monitoring/help/read-me-complete.html#125329CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-502
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