What is CVE-2021-41202?

CVE-2021-41202 is a medium-severity vulnerability in Google Tensorflow, classified under Incorrect Conversion between Numeric Types. CVSS score: 5.5/10. Published 2021-11-05.

How severe is CVE-2021-41202?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2021-41202 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Google Tensorflow

CVE-2021-41202

TensorFlow is an open source platform for machine learning. In affected versions while calculating the size of the output within the `tf.range` kernel, there is a conditional statement of type `int64 = condition ? int64 : double`. Due to C++ implicit conversion rules, both branches of the condition will be cast to `double` and the result would be truncated before the assignment. This result in overflows. 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.

Published 2021-11-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (10.4th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Google Tensorflow — versions 2.7.0
Tensorflow — versions >= 2.6.0, < 2.6.1, >= 2.5.0, < 2.5.2, < 2.4.4

Weakness classification (CWE)

CWE-681 — Incorrect Conversion between Numeric Types

Public proof-of-concept exploits

References

github.com/tensorflow/tensorflow/security/advisories/GHSA-xrqm-fpgr-6hhx (Third Party Advisory)
github.com/tensorflow/tensorflow/issues/46889 (Third Party Advisory, Issue Tracking)
github.com/tensorflow/tensorflow/issues/46912 (Third Party Advisory, Issue Tracking)
github.com/tensorflow/tensorflow/commit/1b0e0ec27e7895b9985076eab32445026ae5ca94 (Patch, Third Party Advisory)
github.com/tensorflow/tensorflow/commit/6d94002a09711d297dbba90390d5482b76113899 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-41202?: CVE-2021-41202 is a medium-severity vulnerability in Google Tensorflow, classified under Incorrect Conversion between Numeric Types. CVSS score: 5.5/10. Published 2021-11-05.
How severe is CVE-2021-41202?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2021-41202 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.