CVE-2024-21400Network attack vector

Privilege escalation via path traversal

Published Mar 12, 2024 · Updated May 3, 2025

Path traversal in Microsoft Azure Kubernetes Service Confidential Containers before 0.3.3 allows remote attackers to elevate privileges. Microsoft has not disclosed the affected path-handling locus or the operation performed on attacker-controlled input. Exploitation requires conditions Microsoft rates as high complexity; the resulting privilege level and reachable resources remain undisclosed.

CVSS severity9.0
Critical
EPSS probability2.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Microsoft Azure Kubernetes Service Confidential Containers before 0.3.3 allows remote attackers to elevate privileges. Microsoft has not disclosed the affected path-handling locus or the operation performed on attacker-controlled input. Exploitation requires conditions Microsoft rates as high complexity; the resulting privilege level and reachable resources remain undisclosed.

The record

CVE
CVE-2024-21400
Published
Mar 12, 2024
Updated
May 3, 2025
Vendor
Microsoft
Product
Azure Kubernetes Service
Classifications
CWE-22, T1068
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 12, 2024CVE publishedPublication date reported by the CVE source.
  2. May 3, 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?

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

  1. Affected versionversion=1.0.0 <0.3.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Azure Kubernetes Serviceversion=1.0.0 <0.3.3

Published CVSS scores

9.0Microsoft CorporationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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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