CVE-2024-7884Network attack vector

Canister heap exhaustion via retained CallFuture references

Published Sep 5, 2024 · Updated Sep 5, 2024

Memory leak in DFINITY ic-cdk allows remote attackers to exhaust a Rust canister's Wasm heap through repeated canister operations. CallFuture polling retains multiple references to CallFutureState and resolves the future without dropping every reference, persisting a state copy in the heap. Reachability requires an affected Rust canister to make inter-canister calls, use timers, or run heartbeat logic; Motoko canisters are unaffected.

CVSS severity7.5
High
EPSS probability0.69%
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 ic-cdk allows remote attackers to exhaust a Rust canister's Wasm heap through repeated canister operations. CallFuture polling retains multiple references to CallFutureState and resolves the future without dropping every reference, persisting a state copy in the heap. Reachability requires an affected Rust canister to make inter-canister calls, use timers, or run heartbeat logic; Motoko canisters are unaffected.

The record

CVE
CVE-2024-7884
Published
Sep 5, 2024
Updated
Sep 5, 2024
Vendor
DFINITY
Product
ic-cdk
Classifications
CWE-401, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 5, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 5, 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=0.10.0 <0.10.1
  2. Affected versionversion=0.10.0 <0.10.1 changes=[{"at":"0.10.1","status":"unaffected"}]
  3. Affected versionversion=0.11.0 <0.11.5
  4. Affected versionversion=0.11.0 <0.11.5 changes=[{"at":"0.11.6","status":"unaffected"}]
  5. Affected versionversion=0.12.0 <0.12.2
  6. Affected versionversion=0.12.0 <0.12.2 changes=[{"at":"0.12.2","status":"unaffected"}]
  7. Affected versionversion=0.13.0 <0.13.4
  8. Affected versionversion=0.13.0 <0.13.4 changes=[{"at":"0.13.5","status":"unaffected"}]
  9. Affected versionversion=0.14.0 <0.14.1
  10. Affected versionversion=0.14.0 <0.14.1 changes=[{"at":"0.14.1","status":"unaffected"}]
  11. Affected versionversion=0.15.0 <0.15.1
  12. Affected versionversion=0.15.0 <0.15.1 changes=[{"at":"0.15.1","status":"unaffected"}]
  13. Affected versionversion=0.8.0 <0.8.2
  14. Affected versionversion=0.8.0 <0.8.2 changes=[{"at":"0.8.2","status":"unaffected"}]
  15. Affected versionversion=0.9.0 <0.9.3
  16. Affected versionversion=0.9.0 <0.9.3 changes=[{"at":"0.9.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

DFINITY · ic-cdkversion=0.10.0 <0.10.1; version=0.10.0 <0.10.1 changes=[{"at":"0.10.1","status":"unaffected"}]; version=0.11.0 <0.11.5; version=0.11.0 <0.11.5 changes=[{"at":"0.11.6","status":"unaffected"}]; version=0.12.0 <0.12.2; version=0.12.0 <0.12.2 changes=[{"at":"0.12.2","status":"unaffected"}]; version=0.13.0 <0.13.4; version=0.13.0 <0.13.4 changes=[{"at":"0.13.5","status":"unaffected"}]; version=0.14.0 <0.14.1; version=0.14.0 <0.14.1 changes=[{"at":"0.14.1","status":"unaffected"}]; version=0.15.0 <0.15.1; version=0.15.0 <0.15.1 changes=[{"at":"0.15.1","status":"unaffected"}]; version=0.8.0 <0.8.2; version=0.8.0 <0.8.2 changes=[{"at":"0.8.2","status":"unaffected"}]; version=0.9.0 <0.9.3; version=0.9.0 <0.9.3 changes=[{"at":"0.9.3","status":"unaffected"}]

Published CVSS scores

7.5DFINITY FoundationCVSS:3.1/AV:N/AC:L/PR:N/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
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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