CVE-2023-40453Public exploitNetwork attack vector

Terminal manipulation and crash via untrusted version output

Published Aug 14, 2023 · Updated Oct 9, 2024

Improper output escaping in Docker Machine 0.16.2 and earlier allows remote attackers controlling a worker node to manipulate terminals or crash a bastion. The version-reporting path accepts Docker daemon version data from the worker and renders it to the administrator's terminal without escaping control sequences or bounding response size. Control of a managed worker is required; escape sequences can alter displayed output, while an infinite byte stream can crash the bastion and its workers.

CVSS severity6.5
Medium
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper output escaping in Docker Machine 0.16.2 and earlier allows remote attackers controlling a worker node to manipulate terminals or crash a bastion. The version-reporting path accepts Docker daemon version data from the worker and renders it to the administrator's terminal without escaping control sequences or bounding response size. Control of a managed worker is required; escape sequences can alter displayed output, while an infinite byte stream can crash the bastion and its workers.

The record

CVE
CVE-2023-40453
Published
Aug 14, 2023
Updated
Oct 9, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-116, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 9, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-116Improper Encoding or Escaping of Output
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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