CVE-2022-21734Public exploitNetwork attack vector

Authenticated denial of service via non-scalar MapStage key

Published Feb 3, 2022 · Updated May 5, 2025

Type confusion in TensorFlow MapStage before 2.5.3 allows remote authenticated users to interrupt service via a non-scalar key tensor. MapStage checks that its key tensor is scalar; a crafted non-scalar key reaches a failing CHECK assertion and terminates the TensorFlow process. The attack requires access to an interface that invokes MapStage, and the demonstrated consequence is denial of service without confidentiality or integrity impact.

CVSS severity6.5
Medium
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

Type confusion in TensorFlow MapStage before 2.5.3 allows remote authenticated users to interrupt service via a non-scalar key tensor. MapStage checks that its key tensor is scalar; a crafted non-scalar key reaches a failing CHECK assertion and terminates the TensorFlow process. The attack requires access to an interface that invokes MapStage, and the demonstrated consequence is denial of service without confidentiality or integrity impact.

The record

CVE
CVE-2022-21734
Published
Feb 3, 2022
Updated
May 5, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-843, T1499
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

4.0NVDAV:N/AC:L/Au:S/C:N/I:N/A:P
6.5NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1OSVCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-843Access of Resource Using Incompatible Type ('Type Confusion')
T1499Endpoint Denial of Service

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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