High
Security advisory
TensorFlow is an open source platform for machine learning. In affected versions the implementation of `FusedBatchNorm` kernels is vulnerable to a heap OOB access. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-41223
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:39 UTC · Revision 1
Source evidence
TensorFlow is an open source platform for machine learning. In affected versions the implementation of `FusedBatchNorm` kernels is vulnerable to a heap OOB access. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.
osv:CVE-2021-41223
Complete source record
{
"id": "4b1270d40e55e08d6ca4dd8484b6ed6870fdd30ce77ae9ad030c31f28220a60b",
"url": "https://osv.dev/vulnerability/CVE-2021-41223",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-41223",
"summary": "TensorFlow is an open source platform for machine learning. In affected versions the implementation of `FusedBatchNorm` kernels is vulnerable to a heap OOB access. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.",
"evidence": "osv:CVE-2021-41223",
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"severity": "high",
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"aliases": [
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"CVE-2021-41223",
"GHSA-f54p-f6jp-4rhr",
"PYSEC-2021-415",
"PYSEC-2021-632",
"PYSEC-2021-830"
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"database_specific": {
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"source": "https://github.com/tensorflow/tensorflow/commit/aab9998916c2ffbd8f0592059fad352622f89cda",
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"modified": "2026-10-20T14:10:55.833649822Z",
"provider": "osv",
"references": [
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"published_at": "2021-11-05T21:15:09.203+00:00"
}