CVE-2022-21740Public exploitNetwork attack vector

Heap corruption via unchecked sparse tensor indices

Published Feb 3, 2022 · Updated May 5, 2025

An out-of-bounds write in TensorFlow through 2.5.2, 2.6.0 through 2.6.2, and 2.7.0 allows attackers to corrupt heap memory. SparseCount::Compute accepts index coordinates outside the corresponding dense_shape bounds and uses them while producing SparseCountSparseOutput. Exploitation requires a deployment that passes attacker-controlled tensors to this operation; demonstrated negative indices can write outside the intended heap buffer.

CVSS severity8.8
High
EPSS probability0.79%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

An out-of-bounds write in TensorFlow through 2.5.2, 2.6.0 through 2.6.2, and 2.7.0 allows attackers to corrupt heap memory. SparseCount::Compute accepts index coordinates outside the corresponding dense_shape bounds and uses them while producing SparseCountSparseOutput. Exploitation requires a deployment that passes attacker-controlled tensors to this operation; demonstrated negative indices can write outside the intended heap buffer.

The record

CVE
CVE-2022-21740
Published
Feb 3, 2022
Updated
May 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 3, 2022CVE publishedPublication date reported by the CVE source.
  2. May 5, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.6GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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