Vulnerability-Lookup

GSD-2021-20699

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Sharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UX552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V984Q R2.000 and prior to it, C981Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it, P404 R3.200 and prior to it, P484 R3.200 and prior to it, P554 R3.200 and prior to it, V404 R3.200 and prior to it, V484 R3.200 and prior to it, V554 R3.200 and prior to it, V404-T R3.200 and prior to it, V484-T R3.200 and prior to it, V554-T R3.200 and prior to it, C501 R2.000 and prior to it, C551 R2.000 and prior to it, C431 R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request.

Aliases

CVE-2021-20699

Aliases

CVE-2021-20699

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-20699",
    "description": "Sharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UX552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V984Q R2.000 and prior to it, C981Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it, P404 R3.200 and prior to it, P484 R3.200 and prior to it, P554 R3.200 and prior to it, V404 R3.200 and prior to it, V484 R3.200 and prior to it, V554 R3.200 and prior to it, V404-T R3.200 and prior to it, V484-T R3.200 and prior to it, V554-T R3.200 and prior to it, C501 R2.000 and prior to it, C551 R2.000 and prior to it, C431 R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request.",
    "id": "GSD-2021-20699"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-20699"
      ],
      "details": "Sharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UX552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V984Q R2.000 and prior to it, C981Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it, P404 R3.200 and prior to it, P484 R3.200 and prior to it, P554 R3.200 and prior to it, V404 R3.200 and prior to it, V484 R3.200 and prior to it, V554 R3.200 and prior to it, V404-T R3.200 and prior to it, V484-T R3.200 and prior to it, V554-T R3.200 and prior to it, C501 R2.000 and prior to it, C551 R2.000 and prior to it, C431 R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request.",
      "id": "GSD-2021-20699",
      "modified": "2023-12-13T01:23:12.078793Z",
      "schema_version": "1.4.0"
    }
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        "ID": "CVE-2021-20699",
        "STATE": "PUBLIC"
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            "value": "Sharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UX552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V984Q R2.000 and prior to it, C981Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it, P404 R3.200 and prior to it, P484 R3.200 and prior to it, P554 R3.200 and prior to it, V404 R3.200 and prior to it, V484 R3.200 and prior to it, V554 R3.200 and prior to it, V404-T R3.200 and prior to it, V484-T R3.200 and prior to it, V554-T R3.200 and prior to it, C501 R2.000 and prior to it, C551 R2.000 and prior to it, C431 R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request."
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          {
            "description": [
              {
                "lang": "eng",
                "value": "Improper certificate validation"
              }
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            "name": "https://www.sharp-nec-displays.com/global/support/info/A5-1_vulnerability.html",
            "refsource": "MISC",
            "url": "https://www.sharp-nec-displays.com/global/support/info/A5-1_vulnerability.html"
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}

CVE-2021-20699 (GCVE-0-2021-20699)

Vulnerability from cvelistv5 – Published: 2021-06-07 13:25 – Updated: 2025-12-08 15:51

Summary

Severity

No CVSS data available.

CWE

Improper certificate validation

Assigner

NEC CNA under the jpcert root

CNA scorecard – unranked: 7 records in the last 180 days, 10 needed details

References

2 references

URL	Tags
https://sharp-displays.jp.sharp/global/support/in…	x_refsource_MISC
https://www.sharp-nec-displays.com/global/support…	x_refsource_MISCx_transferred

Impacted products

34 products

Vendor	Product	Version
Sharp Display Solutions, Ltd.	UN462A	Affected: 0 , ≤ R1.300 (custom)
Sharp Display Solutions, Ltd.	UN462VA	Affected: 0 , ≤ R1.300 (custom)
Sharp Display Solutions, Ltd.	UN492S	Affected: 0 , ≤ R1.300 (custom)
Sharp Display Solutions, Ltd.	UN492VS	Affected: 0 , ≤ R1.300 (custom)
Sharp Display Solutions, Ltd.	UN552A	Affected: 0 , ≤ R1.300 (custom)
Sharp Display Solutions, Ltd.	UN552S	Affected: 0 , ≤ R1.300 (custom)
Sharp Display Solutions, Ltd.	UN552VS	Affected: 0 , ≤ R1.300 (custom)
Sharp Display Solutions, Ltd.	UN552	Affected: 0 , ≤ R1.300 (custom)
Sharp Display Solutions, Ltd.	UN552V	Affected: 0 , ≤ R1.300 (custom)
Sharp Display Solutions, Ltd.	UX552S	Affected: 0 , ≤ R1.300 (custom)
Sharp Display Solutions, Ltd.	UX552	Affected: 0 , ≤ R1.300 (custom)
Sharp Display Solutions, Ltd.	V864Q	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	C861Q	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	P754Q	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	V754Q	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	C751Q	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	V984Q	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	C981Q	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	P654Q	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	V654Q	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	C651Q	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	V554Q	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	C501	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	C551	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	C431	Affected: 0 , ≤ R2.000 (custom)
Sharp Display Solutions, Ltd.	P404	Affected: 0 , ≤ R3.201 (custom)
Sharp Display Solutions, Ltd.	P484	Affected: 0 , ≤ R3.201 (custom)
Sharp Display Solutions, Ltd.	P554	Affected: 0 , ≤ R3.201 (custom)
Sharp Display Solutions, Ltd.	V404	Affected: 0 , ≤ R3.201 (custom)
Sharp Display Solutions, Ltd.	V484	Affected: 0 , ≤ R3.201 (custom)
Sharp Display Solutions, Ltd.	V554	Affected: 0 , ≤ R3.201 (custom)
Sharp Display Solutions, Ltd.	V404-T	Affected: 0 , ≤ R3.201 (custom)
Sharp Display Solutions, Ltd.	V484-T	Affected: 0 , ≤ R3.201 (custom)
Sharp Display Solutions, Ltd.	V554-T	Affected: 0 , ≤ R3.201 (custom)

Show details on NVD website

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To clipboard

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          "versions": [
            {
              "lessThanOrEqual": "R2.000",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "P654Q",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R2.000",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "V654Q",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R2.000",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "C651Q",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R2.000",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "V554Q",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R2.000",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "C501",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R2.000",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "C551",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R2.000",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "C431",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R2.000",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "P404",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R3.201",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "P484",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R3.201",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "P554",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R3.201",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "V404",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R3.201",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "V484",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R3.201",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "V554",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R3.201",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "V404-T",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R3.201",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "V484-T",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R3.201",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "product": "V554-T",
          "vendor": "Sharp Display Solutions, Ltd.",
          "versions": [
            {
              "lessThanOrEqual": "R3.201",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eSharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UX552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V984Q R2.000 and prior to it, C981Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it, P404 R3.200 and prior to it, P484 R3.200 and prior to it, P554 R3.200 and prior to it, V404 R3.200 and prior to it, V484 R3.200 and prior to it, V554 R3.200 and prior to it, V404-T R3.200 and prior to it, V484-T R3.200 and prior to it, V554-T R3.200 and prior to it, C501 R2.000 and prior to it, C551 R2.000 and prior to it, C431 R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request.\u003c/p\u003e"
            }
          ],
          "value": "Sharp NEC Displays ((UN462A R1.300 and prior to it, UN462VA R1.300 and prior to it, UN492S R1.300 and prior to it, UN492VS R1.300 and prior to it, UN552A R1.300 and prior to it, UN552S R1.300 and prior to it, UN552VS R1.300 and prior to it, UN552 R1.300 and prior to it, UN552V R1.300 and prior to it, UX552S R1.300 and prior to it, UX552 R1.300 and prior to it, V864Q R2.000 and prior to it, C861Q R2.000 and prior to it, P754Q R2.000 and prior to it, V754Q R2.000 and prior to it, C751Q R2.000 and prior to it, V984Q R2.000 and prior to it, C981Q R2.000 and prior to it, P654Q R2.000 and prior to it, V654Q R2.000 and prior to it, C651Q R2.000 and prior to it, V554Q R2.000 and prior to it, P404 R3.200 and prior to it, P484 R3.200 and prior to it, P554 R3.200 and prior to it, V404 R3.200 and prior to it, V484 R3.200 and prior to it, V554 R3.200 and prior to it, V404-T R3.200 and prior to it, V484-T R3.200 and prior to it, V554-T R3.200 and prior to it, C501 R2.000 and prior to it, C551 R2.000 and prior to it, C431 R2.000 and prior to it) allows an attacker a buffer overflow and to execute remote code by sending long parameters that contains specific characters in http request."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Improper certificate validation",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-08T15:51:04.541Z",
        "orgId": "f2760a35-e0d8-4637-ac4c-cc1a2de3e282",
        "shortName": "NEC"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://sharp-displays.jp.sharp/global/support/info/A5-1_vulnerability.html"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "x_generator": {
        "engine": "Vulnogram 0.5.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f2760a35-e0d8-4637-ac4c-cc1a2de3e282",
    "assignerShortName": "NEC",
    "cveId": "CVE-2021-20699",
    "datePublished": "2021-06-07T13:25:33.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2025-12-08T15:51:04.541Z",
    "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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.

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.

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