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TensorFlow is an open source platform for machine learning. In affected versions the Keras pooling l...

tensorflow Updated 02 Oct 2025

Summary

05/11/2021
CVE-2021-41196
Yes i
Moderate
5.5

CVE-2021-41196: TensorFlow is an open source platform for machine learning. Affects tensorflow across 5 version ranges.

< 2.4.4 >= 2.5.0, < 2.5.2 >= 2.6.0, < 2.6.1 >= 2.7.0rc0, < 2.7.0 < 12b1ff82b3f26ff8de17e58703231d5a02ef1b8b

Fixed in 4 releases; the minimum fixed version depends on the release line you run. How to fix ↓

Also tracked for

The same CVE-2021-41196 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.

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TensorFlow is an open source platform for machine learning. In affected versions the Keras pooling layers can trigger a segfault if the size of the pool is 0 or if a dimension is negative. This is due to the TensorFlow's implementation of pooling operations where the values in the sliding window are not checked to be strictly positive. 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.

How To Fix

Latest published version: 2.21.0 as of 22 Oct 2026 

pip install --upgrade "tensorflow==2.21.0"

Upgrading to it may include breaking changes; the versions below are the minimum fixed release for this vulnerability.

If you can't move to the latest

The minimum fixed version depends on the release line you run.

  • < 2.4.4 2.4.4 
    pip install --upgrade "tensorflow==2.4.4"
  • >= 2.5.0, < 2.5.2 2.5.2 
    pip install --upgrade "tensorflow==2.5.2"
  • >= 2.6.0, < 2.6.1 2.6.1 
    pip install --upgrade "tensorflow==2.6.1"
  • >= 2.7.0rc0, < 2.7.0 2.7.0 
    pip install --upgrade "tensorflow==2.7.0"

Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →

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References

Related vulnerabilities

Recent vulnerabilities recorded for tensorflow.

View all tensorflow vulnerabilities →
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How To Fix

Latest published version: 2.21.0 as of 22 Oct 2026 

pip install --upgrade "tensorflow==2.21.0"

Upgrading to it may include breaking changes; the versions below are the minimum fixed release for this vulnerability.

If you can't move to the latest

The minimum fixed version depends on the release line you run.

  • < 2.4.4 2.4.4 
    pip install --upgrade "tensorflow==2.4.4"
  • >= 2.5.0, < 2.5.2 2.5.2 
    pip install --upgrade "tensorflow==2.5.2"
  • >= 2.6.0, < 2.6.1 2.6.1 
    pip install --upgrade "tensorflow==2.6.1"
  • >= 2.7.0rc0, < 2.7.0 2.7.0 
    pip install --upgrade "tensorflow==2.7.0"

Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →

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