CVE-2021-29512Public exploit

Process interruption via unchecked RaggedBincount splits index

Published May 14, 2021 · Updated Aug 3, 2024

Out-of-bounds read in Google TensorFlow 2.3.0 through 2.3.2 and 2.4.0 through 2.4.1 allows local users to interrupt a process. RaggedBincount increments batch_idx while processing a user-controlled, one-element splits tensor and then reads splits(1) without validating the index. The caller must be able to supply operation inputs to an affected TensorFlow process; published evidence establishes an out-of-bounds read and availability impact, not code execution.

CVSS severity2.5
Low
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in Google TensorFlow 2.3.0 through 2.3.2 and 2.4.0 through 2.4.1 allows local users to interrupt a process. RaggedBincount increments batch_idx while processing a user-controlled, one-element splits tensor and then reads splits(1) without validating the index. The caller must be able to supply operation inputs to an affected TensorFlow process; published evidence establishes an out-of-bounds read and availability impact, not code execution.

The record

CVE
CVE-2021-29512
Published
May 14, 2021
Updated
Aug 3, 2024
Vendor
Google
Product
TensorFlow
Classifications
CWE-787, CWE-120
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 14, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>=2.3.0, < 2.3.3
  2. Affected versionversion=>= 2.4.0, < 2.4.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google · TensorFlowversion=>=2.3.0, < 2.3.3; version=>= 2.4.0, < 2.4.2

Published CVSS scores

4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
2.5GitHub, Inc.CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
7.8NIST NVDCVSS:3.1/AV:L/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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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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