CVE-2021-41224

`SparseFillEmptyRows` heap OOB read

7.1 HighFix available

TensorFlow is an open source platform for machine learning. In affected versions the implementation of SparseFillEmptyRows can be made to trigger a heap OOB access. This occurs whenever the size of indices does not match the size of values. 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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: High

Exploit likelihood

0.21%Down 0.4 points since Nov 6, 2021

What each source reports

CVE List Score used7.1

`SparseFillEmptyRows` heap OOB read

Record: CVE-2021-41224
CVSS 3.1: 7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

EUVDEUVD-2021-04467.1

Record: EUVD-2021-0446
CVSS 3.1: 7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Updated: 2026-11-03

GitHub AdvisoriesGHSA-rg3m-hqc5-344v6.9

`SparseFillEmptyRows` heap OOB

Impact

The implementation of SparseFillEmptyRows can be made to trigger a heap OOB access:

import tensorflow as tf
  
data=tf.raw_ops.SparseFillEmptyRows(
  indices=[[0,0],[0,0],[0,0]],
  values=['sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss'],
  dense_shape=[5,3],
  default_value='o')

This occurs whenever the size of indices does not match the size of values.

Patches

We have patched the issue in GitHub commit 67bfd9feeecfb3c61d80f0e46d89c170fbee682b.

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.

For more information

Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.

Attribution

This vulnerability has been reported by members of the Aivul Team from Qihoo 360.

Record: GHSA-rg3m-hqc5-344v
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

NVD7.1

Record: CVE-2021-41224
CVSS 3.1: 7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVSS 2.0: 3.6 LowAV:L/AC:L/Au:N/C:P/I:N/A:P
Weakness: CWE-125
Updated: 2026-11-02

OSV7.1

Record: CVE-2021-41224
CVSS 3.1: 7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Updated: 2026-11-02

OSVGHSA-rg3m-hqc5-344v6.9

`SparseFillEmptyRows` heap OOB

Impact

The implementation of SparseFillEmptyRows can be made to trigger a heap OOB access:

import tensorflow as tf
  
data=tf.raw_ops.SparseFillEmptyRows(
  indices=[[0,0],[0,0],[0,0]],
  values=['sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss'],
  dense_shape=[5,3],
  default_value='o')

This occurs whenever the size of indices does not match the size of values.

Patches

We have patched the issue in GitHub commit 67bfd9feeecfb3c61d80f0e46d89c170fbee682b.

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.

For more information

Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.

Attribution

This vulnerability has been reported by members of the Aivul Team from Qihoo 360.

Record: GHSA-rg3m-hqc5-344v
CVSS 4.0: 6.9 MediumCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
CVSS 3.1: 7.1 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weakness: CWE-125
Updated: 2026-11-02

Show 5 moreShow less

OSVBIT-tensorflow-2021-41224No score

`SparseFillEmptyRows` heap OOB read

Record: BIT-tensorflow-2021-41224
Updated: 2026-11-02

OSVopenSUSE-SU-2024:12116-1No score

tensorflow-lite-2.9.1-1.1 on GA media

These are all security issues fixed in the tensorflow-lite-2.9.1-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:12116-1
Updated: 2026-11-02

OSVPYSEC-2021-416No score

Record: PYSEC-2021-416
Updated: 2026-11-02

OSVPYSEC-2021-633No score

Record: PYSEC-2021-633
Updated: 2026-11-02

OSVPYSEC-2021-831No score

Record: PYSEC-2021-831
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`tensorflow` PyPI	2.6.0 up to 2.6.1	2.6.1
`tensorflow` PyPI	2.5.0 up to 2.5.2	2.5.2
`tensorflow` PyPI	before 2.4.4	2.4.4
`tensorflow-cpu` PyPI	2.6.0 up to 2.6.1	2.6.1
`tensorflow-cpu` PyPI	2.5.0 up to 2.5.2	2.5.2
`tensorflow-cpu` PyPI	before 2.4.4	2.4.4
`tensorflow-gpu` PyPI	2.6.0 up to 2.6.1	2.6.1
`tensorflow-gpu` PyPI	2.5.0 up to 2.5.2	2.5.2
`tensorflow-gpu` PyPI	before 2.4.4	2.4.4
`tensorflow` Bitnami	before 2.4.4, 2.5.0 up to 2.5.2, 2.6.0 up to 2.6.1	2.4.42.5.22.6.1

Show 9 moreShow less

Affected packages
Package	Affected	Fixed
`tensorflow` PyPI	2.5.0 up to 2.5.2, plus listed versions 2.5.1	2.5.2
`tensorflow` PyPI	before 2.4.4, plus listed versions 0.12.00.12.11.0.01.0.11.1.0 Show 45 moreShow less 1.10.01.10.11.11.01.12.01.12.21.12.31.13.11.13.21.14.01.15.01.15.21.15.31.15.41.15.51.2.01.2.11.3.01.4.01.4.11.5.01.5.11.6.01.7.01.7.11.8.01.9.02.0.02.0.12.0.22.0.32.0.42.1.02.1.12.1.22.1.32.1.42.2.02.2.12.2.22.2.32.3.02.3.12.3.22.3.32.3.4	2.4.4
`tensorflow-cpu` PyPI	2.5.0 up to 2.5.2, plus listed versions 2.5.1	2.5.2
`tensorflow-cpu` PyPI	before 2.4.4, plus listed versions 1.15.02.1.02.1.12.1.22.1.3 Show 14 moreShow less 2.1.42.2.02.2.12.2.22.2.32.3.02.3.12.3.22.3.32.3.42.4.02.4.12.4.22.4.3	2.4.4
`tensorflow-gpu` PyPI	2.5.0 up to 2.5.2, plus listed versions 2.5.1	2.5.2
`tensorflow-gpu` PyPI	before 2.4.4, plus listed versions 0.12.00.12.11.0.01.0.11.1.0 Show 45 moreShow less 1.10.01.10.11.11.01.12.01.12.21.12.31.13.11.13.21.14.01.15.01.15.21.15.31.15.41.15.51.2.01.2.11.3.01.4.01.4.11.5.01.5.11.6.01.7.01.7.11.8.01.9.02.0.02.0.12.0.22.0.32.0.42.1.02.1.12.1.22.1.32.1.42.2.02.2.12.2.22.2.32.3.02.3.12.3.22.3.32.3.4	2.4.4
`tensorflow` PyPI	before 2.4.4, 2.5.0 up to 2.5.2, 2.6.0 up to 2.6.1, 2.7.0rc0 up to 2.7.0, plus listed versions 0.12.00.12.11.0.01.0.11.1.0 Show 45 moreShow less 1.10.01.10.11.11.01.12.01.12.21.12.31.13.11.13.21.14.01.15.01.15.21.15.31.15.41.15.51.2.01.2.11.3.01.4.01.4.11.5.01.5.11.6.01.7.01.7.11.8.01.9.02.0.02.0.12.0.22.0.32.0.42.1.02.1.12.1.22.1.32.1.42.2.02.2.0rc02.2.0rc12.2.0rc22.2.0rc32.2.0rc42.2.12.2.22.2.3	2.4.42.5.22.6.12.7.0
`tensorflow-cpu` PyPI	before 2.4.4, 2.5.0 up to 2.5.2, 2.6.0 up to 2.6.1, 2.7.0rc0 up to 2.7.0, plus listed versions 1.15.02.1.02.1.12.1.22.1.3 Show 16 moreShow less 2.1.42.2.02.2.12.2.22.2.32.3.02.3.12.3.22.3.32.3.42.4.02.4.12.4.22.4.32.5.12.7.0rc1	2.4.42.5.22.6.12.7.0
`tensorflow-gpu` PyPI	before 2.4.4, 2.5.0 up to 2.5.2, 2.6.0 up to 2.6.1, 2.7.0rc0 up to 2.7.0, plus listed versions 0.12.00.12.11.0.01.0.11.1.0 Show 45 moreShow less 1.10.01.10.11.11.01.12.01.12.21.12.31.13.11.13.21.14.01.15.01.15.21.15.31.15.41.15.51.2.01.2.11.3.01.4.01.4.11.5.01.5.11.6.01.7.01.7.11.8.01.9.02.0.02.0.12.0.22.0.32.0.42.1.02.1.12.1.22.1.32.1.42.2.02.2.12.2.22.2.32.3.02.3.12.3.22.3.32.3.4	2.4.42.5.22.6.12.7.0

History

History
Recorded	Changed	Sources
Nov 6, 2026	facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-41224 is a high vulnerability (CVSS 7.1) in Google Tensorflow, published November 5, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. Fixed in tensorflow 2.6.1.

References

Show 165 moreShow less

This page doesn't list everything

Left out here: 33 versions. The JSON record has them.