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CVE-2021-3287 (GCVE-0-2021-3287)

Vulnerability from cvelistv5 – Published: 2021-04-22 12:58 – Updated: 2024-08-03 16:53
VLAI Shadowserver
Summary
Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
Shadowserver
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 9d95d18f-79f5-47b5-bc7c-311ff40da0f1

Vulnerability ID: CVE-2021-3287

Status: Confirmed

Status Updated: 2024-09-13 00:00 UTC

Exploited: Yes

Characteristics
Severity: 98.0
Timestamps
First Seen: 2024-01-13
Asserted: 2024-01-13
Last Seen: 2024-09-13
Scope
Asset Exposure: ['internet-facing']
Notes: Affected: Zoho / ManageEngine OpManager | Class: other-software | Severity: Critical (CVSS 9.8) | IoT: no | In CISA KEV: no | Honeypot connections on 2024-09-13: 1
Evidence

Type: Honeypot

Signal: In The Wild Attempts

Confidence: 70%

Source: shadowserver

Details
1D 1
Iot no
Feed Shadowserver Foundation honeypot/exploited-vulnerabilities
Type http-scan
Class other-software
7D Avg 0
Vendor Zoho
30D Avg 0
90D Avg 0
Product ManageEngine OpManager
Cisa Kev no
Connections 1
Observation Date 2024-09-13
Vulnerability Class CVSS
Vulnerability Score 9.8
Vulnerability Severity Critical
References
Created: 2026-07-01 09:12 UTC | Updated: 2026-07-01 13:15 UTC
Show details on NVD website
To clipboard 

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                    "criteria": "cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125312:*:*:*:*:*:*",
                    "matchCriteriaId": "9A4C70B1-A902-4835-BFFC-692CA91C1317",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125323:*:*:*:*:*:*",
                    "matchCriteriaId": "06FE113C-94B6-419B-8AA0-767EA74D11ED",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125324:*:*:*:*:*:*",
                    "matchCriteriaId": "C30413D5-7F5B-47EE-825E-CEEF69DAC5B7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125326:*:*:*:*:*:*",
                    "matchCriteriaId": "57DA6C66-3235-4923-89D0-EF093FF4126F",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:zohocorp:manageengine_opmanager:12.5:build125328:*:*:*:*:*:*",
                    "matchCriteriaId": "82307372-C2CF-4E19-9D1D-7D33FCCE8F5B",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Zoho ManageEngine OpManager before 12.5.329 allows unauthenticated Remote Code Execution due to a general bypass in the deserialization class."
          },
          {
            "lang": "es",
            "value": "Zoho ManageEngine OpManager versiones anteriores a 12.5.329, permite una ejecuci\u00f3n de c\u00f3digo remota no autenticada debido a una omisi\u00f3n general en la clase de deserializaci\u00f3n"
          }
        ],
        "id": "CVE-2021-3287",
        "lastModified": "2024-11-21T06:21:13.537",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "HIGH",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 7.5,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 10.0,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ],
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.8,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2021-04-22T13:15:07.970",
        "references": [
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://packetstormsecurity.com/files/164231/ManageEngine-OpManager-SumPDU-Java-Deserialization.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Release Notes",
              "Vendor Advisory"
            ],
            "url": "https://www.manageengine.com/network-monitoring/help/read-me-complete.html#125329"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://packetstormsecurity.com/files/164231/ManageEngine-OpManager-SumPDU-Java-Deserialization.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Release Notes",
              "Vendor Advisory"
            ],
            "url": "https://www.manageengine.com/network-monitoring/help/read-me-complete.html#125329"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-502"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-03-27T14:01:09+00:00",
      "cve": "CVE-2021-3287",
      "id": "CVE-2021-3287",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-3287",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-3287.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.