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Medium

Security advisory

Type: advisorySources: OSVCVE: CVE-2021-37683

TensorFlow is an end-to-end open source platform for machine learning. In affected versions the implementation of division in TFLite is [vulnerable to a division by 0 error](https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/lite/kernels/div.cc). There is no check that the divisor tensor does not contain zero elements. We have patched the issue in GitHub commit 1e206baedf8bef0334cca3eb92bab134ef525a28. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2021-37683
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 12:40 UTC · Revision 1

Source evidence

CVE-2021-37683

core-osv · Original source

Published 12 Aug 2021, 23:15 UTC

TensorFlow is an end-to-end open source platform for machine learning. In affected versions the implementation of division in TFLite is [vulnerable to a division by 0 error](https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/lite/kernels/div.cc). There is no check that the divisor tensor does not contain zero elements. We have patched the issue in GitHub commit 1e206baedf8bef0334cca3eb92bab134ef525a28. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.

osv:CVE-2021-37683
Complete source record
{
  "id": "30ce9990f65f9e3e68f3559b749df8c3ec747240599f44dc8ce67e3a7b82fee5",
  "url": "https://osv.dev/vulnerability/CVE-2021-37683",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-37683",
    "summary": "TensorFlow is an end-to-end open source platform for machine learning. In affected versions the implementation of division in TFLite is [vulnerable to a division by 0 error](https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/lite/kernels/div.cc). There is no check that the divisor tensor does not contain zero elements. We have patched the issue in GitHub commit 1e206baedf8bef0334cca3eb92bab134ef525a28. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.",
    "evidence": "osv:CVE-2021-37683",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-37683",
      "aliases": [
        "BIT-tensorflow-2021-37683",
        "CVE-2021-37683",
        "GHSA-rhrq-64mq-hf9h",
        "PYSEC-2021-305",
        "PYSEC-2021-596",
        "PYSEC-2021-794"
      ],
      "metrics": [
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          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
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                },
                {
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                },
                {
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                {
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                        "fixed": "2.3.4"
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                    "cpe": "cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.4.0"
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                      {
                        "fixed": "2.4.3"
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                    "source": "CPE_RANGE"
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                  {
                    "cpe": "cpe:2.3:a:google:tensorflow:2.5.0:*:*:*:*:*:*:*",
                    "range": [
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                    "range": [
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                  {
                    "cpe": "cpe:2.3:a:google:tensorflow:2.6.0:rc1:*:*:*:*:*:*",
                    "range": [
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                        "introduced": "2.6.0-rc1"
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                      {
                        "last_affected": "2.6.0-rc1"
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                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:google:tensorflow:2.6.0:rc2:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.6.0-rc2"
                      },
                      {
                        "last_affected": "2.6.0-rc2"
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                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
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                        "fixed": "1e206baedf8bef0334cca3eb92bab134ef525a28"
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                    "source": "REFERENCES_COMMIT"
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                ]
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          "versions": [
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            "v2.4.1",
            "v2.4.0",
            "v2.3.1",
            "v2.3.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-37683.json",
            "vanir_signatures": [
              {
                "id": "CVE-2021-37683-2a014b6b",
                "digest": {
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                  "function_hash": "241915295281335653926816805390204060819"
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                "source": "https://github.com/tensorflow/tensorflow/commit/1e206baedf8bef0334cca3eb92bab134ef525a28",
                "target": {
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                  "function": "Eval"
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                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
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                "source": "https://github.com/tensorflow/tensorflow/commit/1e206baedf8bef0334cca3eb92bab134ef525a28",
                "target": {
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                "deprecated": false,
                "signature_type": "Line",
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            "vanir_signatures_modified": "2026-10-20T14:11:00Z"
          }
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      ],
      "modified": "2026-10-20T14:11:00.722073140Z",
      "provider": "osv",
      "references": [
        "https://github.com/tensorflow/tensorflow/security/advisories/GHSA-rhrq-64mq-hf9h",
        "https://github.com/tensorflow/tensorflow/commit/1e206baedf8bef0334cca3eb92bab134ef525a28"
      ],
      "provider_metadata": {}
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    "related_cves": [
      {
        "value": "CVE-2021-37683",
        "evidence": "/id"
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    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388696,
  "published_at": "2021-08-12T23:15:08.487+00:00"
}