CVE-2024-7884: When a canister method is called via ic_cdk::call* , a new Future CallFuture is created and can be awaited by

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HIGH 7.5REMOTEUPGRADE

CVE-2024-7884 is a high-severity flaw (CVSS 7.5) affecting canister developer kit for the internet computer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

When a canister method is called via ic_cdk::call* , a new Future CallFuture is created and can be awaited by the caller to get the execution result. Internally, the state of the Future is tracked and stored in a struct called CallFutureState. A bug in the polling implementation of the CallFuture allows multiple references to be held for this internal state and not all references were dropped before the Future is resolved. Since we have unaccou

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-401
Published	2024-09-05
Last modified	2026-06-17

Publisher (CNA): DFINITY Foundation · Vendor: dfinity

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2024-09-05 13:15 UTCPublished CVE record published
2026-06-17 08:21 UTCUpdated Record last modified

dfinity canister developer kit for the internet computer UPGRADE

Affected: >= 0.8.0 and < 0.8.2 · >= 0.9.0 and < 0.9.3 · >= 0.11.0 and < 0.11.6 · >= 0.12.0 and < 0.12.2 · >= 0.13.0 and < 0.13.5 · 0.10.0 · 0.14.0 · 0.15.0

Fixed in: 0.8.2, 0.9.3, 0.11.6, 0.12.2, 0.13.5

Safe to downgrade to: a release before 0.8.0

1. Check installed version

apt-cache policy canister-developer-kit-for-the-internet-computer || rpm -q canister-developer-kit-for-the-internet-computer || canister-developer-kit-for-the-internet-computer --version

2. UPGRADE to 0.8.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade canister-developer-kit-for-the-internet-computer

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade canister-developer-kit-for-the-internet-computer

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 0.8.0 (Debian / Ubuntu)

apt-cache madison canister-developer-kit-for-the-internet-computer sudo apt install canister-developer-kit-for-the-internet-computer=<VERSION_BEFORE_0.8.0> sudo apt-mark hold canister-developer-kit-for-the-internet-computer

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list canister-developer-kit-for-the-internet-computer sudo dnf downgrade canister-developer-kit-for-the-internet-computer-<VERSION_BEFORE_0.8.0> sudo dnf versionlock add canister-developer-kit-for-the-internet-computer

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2024-7884?

canister developer kit for the internet computer: upgrade to 0.8.2, 0.9.3, 0.11.6, 0.12.2, 0.13.5. Exact commands for each OS are on this page.

Is CVE-2024-7884 being exploited?

CVE-2024-7884 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2024-7884 affect?

CVE-2024-7884 affects canister developer kit for the internet computer. Severity is high (CVSS 7.5). When a canister method is called via ic_cdk::call* , a new Future CallFuture is created and can be awaited by the caller to get the execution result. Internally, the state of the Future is tracked and stored in a struct called CallFutureSt

How urgent is CVE-2024-7884?

Priority 44/100. High severity; Remotely exploitable, no login, no user action

References

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