CVE-2021-37666

TensorFlow is an end-to-end open source platform for machine learning. In affected versions an attacker can cause undefined behavior via binding a reference to null pointer in `tf.raw_ops.RaggedTensorToVariant`. The [implementation](https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/core/kernels/ragged_tensor_to_variant_op.cc#L129) has an incomplete validation of the splits values, missing the case when the argument would be empty. We have patched the issue in GitHub commit be7a4de6adfbd303ce08be4332554dff70362612. 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.

• CWE-824

• https://github.com/tensorflow/tensorflow/commit/be7a4de6adfbd303ce08be4332554dff70362612Patch, Third Party Advisory
• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-w4xf-2pqw-5mq7Third Party Advisory
• https://github.com/tensorflow/tensorflow/commit/be7a4de6adfbd303ce08be4332554dff70362612Patch, Third Party Advisory
• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-w4xf-2pqw-5mq7Third Party Advisory

Published

Aug 12, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2021-37660TensorFlow is an end-to-end open source platform for machine…5.5
• CVE-2021-37661TensorFlow is an end-to-end open source platform for machine…5.5
• CVE-2021-37662TensorFlow is an end-to-end open source platform for machine…7.8
• CVE-2021-37663TensorFlow is an end-to-end open source platform for machine…7.8
• CVE-2021-37664TensorFlow is an end-to-end open source platform for machine…7.1
• CVE-2021-37665TensorFlow is an end-to-end open source platform for machine…7.8
• CVE-2021-37667TensorFlow is an end-to-end open source platform for machine…7.8
• CVE-2021-37668TensorFlow is an end-to-end open source platform for machine…5.5
• CVE-2021-37669TensorFlow is an end-to-end open source platform for machine…5.5
• CVE-2021-3767bookstack is vulnerable to Improper Neutralization of Input …5.4
• CVE-2021-37670TensorFlow is an end-to-end open source platform for machine…5.5
• CVE-2021-37671TensorFlow is an end-to-end open source platform for machine…7.8