Which products and versions are affected by CVE-2021-3287?

Affected: Manageengine Opmanager (Zohocorp) versions 12.5, 12.5-build125000, 12.5-build125002, 12.5-build125100, 12.5-build125101, 12.5-build125102, 12.5-build125108, 12.5-build125110. The full list is in the CVE brief.

Is CVE-2021-3287 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Apr 22, 2021.

Is CVE-2021-3287 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2021-3287?

Public exploit code is available.

Is there a fix for CVE-2021-3287?

Fixed versions are available, including Manageengine Opmanager 12.5.

How urgently should CVE-2021-3287 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2021-3287

CriticalExploitedPublic exploit

Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.

Published Apr 26, 2021 · Updated Aug 3, 2024 · Also known as TR-21-0354

Key Facts

Patch immediately

CVE-2021-3287 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Manageengine Opmanager (Zohocorp).
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Apr 22, 2021. Public exploit code is available.
EPSS estimates a 51% probability of exploitation in the next 30 days.
Fixed versions are available, including Manageengine Opmanager 12.5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

CVSS v3.1

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

51%

Higher than 98.9% of all scored CVEs

Exploited in the wild

Yes

2 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2021-3287 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Jan 13, 2024	n/a	Not reported
CIRCL KEV	Apr 22, 2021	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

66 affected entries in total

Product	Affected versions	Fixed in
Manageengine OpmanagerZohocorp	12.5, 12.5-build125000, 12.5-build125002, 12.5-build125100, 12.5-build125101, 12.5-build125102, 12.5-build125108, 12.5-build125110	12.5

Patched Releases

Manageengine Opmanager

12.5

Timeline

Added to CIRCL KEV
Apr 22, 2021
Publicly disclosed
Apr 26, 2021
Added to Industry KEV feed
Jan 13, 2024
Last updated
Aug 3, 2024

Weakness Type

CWE-502 Deserialization of Untrusted Data

References

3 more references in the full CVE brief

FAQ

Common Questions.

Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.
Affected: Manageengine Opmanager (Zohocorp) versions 12.5, 12.5-build125000, 12.5-build125002, 12.5-build125100, 12.5-build125101, 12.5-build125102, 12.5-build125108, 12.5-build125110. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Apr 22, 2021.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Manageengine Opmanager 12.5.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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