CVE-2024-4435Network attack vector

Service interruption via incomplete memory-chunk deallocation

Published May 21, 2024 · Updated Aug 1, 2024

Memory leak in DFINITY Foundation ic-stable-structures 0.6.0 through 0.6.3 allows remote attackers to exhaust canister memory. The BTreeMap node-deallocation path releases only the first chunk in a linked overflow chain, leaving the remaining chunks allocated. Reachability requires a canister API that permits repeated mutation of a BTreeMap storing unbounded types; accumulated stable-memory loss can interrupt that canister.

CVSS severity5.9
Medium
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leak in DFINITY Foundation ic-stable-structures 0.6.0 through 0.6.3 allows remote attackers to exhaust canister memory. The BTreeMap node-deallocation path releases only the first chunk in a linked overflow chain, leaving the remaining chunks allocated. Reachability requires a canister API that permits repeated mutation of a BTreeMap storing unbounded types; accumulated stable-memory loss can interrupt that canister.

The record

CVE
CVE-2024-4435
Published
May 21, 2024
Updated
Aug 1, 2024
Vendor
DFINITY Foundation
Product
ic-stable-structures
Classifications
CWE-401, CAPEC-131, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 21, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 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=0.6.0 <0.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DFINITY Foundation · ic-stable-structuresversion=0.6.0 <0.6.4

Published CVSS scores

5.9DFINITY FoundationCVSS:3.1/AV:N/AC:H/PR:N/UI:N/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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
CAPEC-131Resource Leak Exposure
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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