Vulnerability-Lookup

FKIE_CVE-2021-4465

Vulnerability from fkie_nvd - Published: 2025-11-14 23:15 - Updated: 2026-06-17 04:19

Severity

8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Summary

ReQuest Serious Play F3 Media Server versions 7.0.3.4968 (Pro), 7.0.2.4954, 6.5.2.4954, 6.4.2.4681, 6.3.2.4203, and 2.0.1.823 contain a remote denial-of-service vulnerability. The device can be shut down or rebooted by an unauthenticated attacker through a single crafted HTTP GET request, allowing remote interruption of service availability.

References

	URL	Tags
	disclosure@vulncheck.com	http://www.request.com/
	disclosure@vulncheck.com	https://cxsecurity.com/issue/WLB-2020100122
	disclosure@vulncheck.com	https://exchange.xforce.ibmcloud.com/vulnerabilities/190031
	disclosure@vulncheck.com	https://packetstorm.news/files/id/159602
	disclosure@vulncheck.com	https://www.exploit-db.com/exploits/48951
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/request-serious-play-f3-media-server-remote-dos
	disclosure@vulncheck.com	https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5601.php
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://cxsecurity.com/issue/WLB-2020100122
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://www.exploit-db.com/exploits/48951
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5601.php

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "ReQuest Serious Play Pro",
          "vendor": "ReQuest Serious Play LLC",
          "versions": [
            {
              "status": "affected",
              "version": "7.0.3.4968"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "ReQuest Serious Play",
          "vendor": "ReQuest Serious Play LLC",
          "versions": [
            {
              "status": "affected",
              "version": "7.0.2.4954"
            },
            {
              "status": "affected",
              "version": "6.5.2.4954"
            },
            {
              "status": "affected",
              "version": "6.4.2.4681"
            },
            {
              "status": "affected",
              "version": "6.3.2.4203"
            },
            {
              "status": "affected",
              "version": "2.0.1.823"
            }
          ]
        }
      ],
      "source": "disclosure@vulncheck.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "ReQuest Serious Play F3 Media Server versions 7.0.3.4968 (Pro), 7.0.2.4954, 6.5.2.4954, 6.4.2.4681, 6.3.2.4203, and 2.0.1.823 contain a remote denial-of-service vulnerability. The device can be shut down or rebooted by an unauthenticated attacker through a single crafted HTTP GET request, allowing remote interruption of service availability."
    }
  ],
  "id": "CVE-2021-4465",
  "lastModified": "2026-06-17T04:19:48.960",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-4465",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-11-18T16:28:09.165341Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-11-14T23:15:42.177",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "http://www.request.com/"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://cxsecurity.com/issue/WLB-2020100122"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/190031"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://packetstorm.news/files/id/159602"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.exploit-db.com/exploits/48951"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/request-serious-play-f3-media-server-remote-dos"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5601.php"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://cxsecurity.com/issue/WLB-2020100122"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://www.exploit-db.com/exploits/48951"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5601.php"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

CVE-2021-4465 (GCVE-0-2021-4465)

Vulnerability from cvelistv5 – Published: 2025-11-14 22:51 – Updated: 2026-04-07 14:05

Title

ReQuest Serious Play F3 Media Server <= 7.0.3 Remote DoS

Summary

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-11-18 16:28 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

VulnCheck mitre root

References

7 references

URL	Tags
https://www.zeroscience.mk/en/vulnerabilities/ZSL…	technical-descriptionexploit
https://www.exploit-db.com/exploits/48951	exploit
https://packetstorm.news/files/id/159602	exploit
https://cxsecurity.com/issue/WLB-2020100122	exploit
https://exchange.xforce.ibmcloud.com/vulnerabilit…	vdb-entry
http://www.request.com/	product
https://www.vulncheck.com/advisories/request-seri…	third-party-advisory

Impacted products

2 products

Vendor	Product	Version
ReQuest Serious Play LLC	ReQuest Serious Play Pro	Affected: 7.0.3.4968 cpe:2.3:a:request:serious_play_pro:7.0.3.4968:::::::*
ReQuest Serious Play LLC	ReQuest Serious Play	Affected: 7.0.2.4954 Affected: 6.5.2.4954 Affected: 6.4.2.4681 Affected: 6.3.2.4203 Affected: 2.0.1.823 cpe:2.3:a:request:serious_play_pro:7.0.2.4954:::::::* cpe:2.3:a:request:serious_play_pro:6.5.2.4954:::::::* cpe:2.3:a:request:serious_play_pro:6.4.2.4681:::::::* cpe:2.3:a:request:serious_play_pro:6.3.2.4203:::::::* cpe:2.3:a:request:serious_play_pro:2.0.1.823:::::::*

Date Public

2020-10-26 00:00

Credits

Gjoko Krstic of Zero Science Lab

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-4465",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-18T16:28:09.165341Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-18T16:28:12.048Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5601.php"
          },
          {
            "tags": [
              "exploit"
            ],
            "url": "https://www.exploit-db.com/exploits/48951"
          },
          {
            "tags": [
              "exploit"
            ],
            "url": "https://cxsecurity.com/issue/WLB-2020100122"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "ReQuest Serious Play Pro",
          "vendor": "ReQuest Serious Play LLC",
          "versions": [
            {
              "status": "affected",
              "version": "7.0.3.4968"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "ReQuest Serious Play",
          "vendor": "ReQuest Serious Play LLC",
          "versions": [
            {
              "status": "affected",
              "version": "7.0.2.4954"
            },
            {
              "status": "affected",
              "version": "6.5.2.4954"
            },
            {
              "status": "affected",
              "version": "6.4.2.4681"
            },
            {
              "status": "affected",
              "version": "6.3.2.4203"
            },
            {
              "status": "affected",
              "version": "2.0.1.823"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:request:serious_play_pro:7.0.3.4968:*:*:*:*:*:*:*",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            },
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:request:serious_play_pro:7.0.2.4954:*:*:*:*:*:*:*",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:request:serious_play_pro:6.5.2.4954:*:*:*:*:*:*:*",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:request:serious_play_pro:6.4.2.4681:*:*:*:*:*:*:*",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:request:serious_play_pro:6.3.2.4203:*:*:*:*:*:*:*",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:request:serious_play_pro:2.0.1.823:*:*:*:*:*:*:*",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "OR"
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "finder",
          "value": "Gjoko Krstic of Zero Science Lab"
        }
      ],
      "datePublic": "2020-10-26T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
              "value": "ReQuest Serious Play F3 Media Server versions 7.0.3.4968 (Pro), 7.0.2.4954, 6.5.2.4954, 6.4.2.4681, 6.3.2.4203, and 2.0.1.823 contain a remote denial-of-service vulnerability. The device can be shut down or rebooted by an unauthenticated attacker through a single crafted HTTP GET request, allowing remote interruption of service availability."
            }
          ],
          "value": "ReQuest Serious Play F3 Media Server versions 7.0.3.4968 (Pro), 7.0.2.4954, 6.5.2.4954, 6.4.2.4681, 6.3.2.4203, and 2.0.1.823 contain a remote denial-of-service vulnerability. The device can be shut down or rebooted by an unauthenticated attacker through a single crafted HTTP GET request, allowing remote interruption of service availability."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-227",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-227 Sustained Client Engagement"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
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            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
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        }
      ],
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              "description": "CWE-400 Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
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      ],
      "providerMetadata": {
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        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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        },
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          "tags": [
            "exploit"
          ],
          "url": "https://cxsecurity.com/issue/WLB-2020100122"
        },
        {
          "tags": [
            "vdb-entry"
          ],
          "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/190031"
        },
        {
          "tags": [
            "product"
          ],
          "url": "http://www.request.com/"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/request-serious-play-f3-media-server-remote-dos"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2020-10-18T16:00:00.000Z",
          "value": "ZSL-2020-5601 is publicly disclosed."
        }
      ],
      "title": "ReQuest Serious Play F3 Media Server \u003c= 7.0.3 Remote DoS",
      "x_generator": {
        "engine": "vulncheck"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2021-4465",
    "datePublished": "2025-11-14T22:51:28.004Z",
    "dateReserved": "2025-11-14T18:47:13.964Z",
    "dateUpdated": "2026-04-07T14:05:26.396Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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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.

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FKIE_CVE-2021-4465

CVE-2021-4465 (GCVE-0-2021-4465)

Tags

Sightings

Nomenclature

Related by attack behaviour