CVE-2024-36621Network attack vector

Resource exhaustion via unlocked layer registration

Published Nov 29, 2024 · Updated Dec 4, 2024

Race condition in Moby 25.0.5 allows remote authenticated users to exhaust resources by submitting concurrent image builds. EnsureLayer updates the shared refs map without a per-layer lock, so concurrent exporters can register the same layer twice and corrupt its reference count. Access to the build interface and overlapping builds are required; leaked layers consume resources until the service is interrupted.

CVSS severity6.5
Medium
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in Moby 25.0.5 allows remote authenticated users to exhaust resources by submitting concurrent image builds. EnsureLayer updates the shared refs map without a per-layer lock, so concurrent exporters can register the same layer twice and corrupt its reference count. Access to the build interface and overlapping builds are required; leaked layers consume resources until the service is interrupted.

The record

CVE
CVE-2024-36621
Published
Nov 29, 2024
Updated
Dec 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-362, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 4, 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
8.7GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
T1499.004Application or System Exploitation

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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