CVE-2024-27530: wasm3 139076a contains a Use-After-Free in ForEachModule.

Routine

HIGH 8.4DOWNGRADE

CVE-2024-27530 is a high-severity flaw (CVSS 8.4) affecting wasm3. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

wasm3 139076a contains a Use-After-Free in ForEachModule.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.4 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 87%)
CISA exploited list	No
Weakness	CWE-416
Published	2024-11-08
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: wasm3 project

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

Am I affected?

Timeline

2024-11-08 22:15 UTCPublished CVE record published
2026-06-17 07:19 UTCUpdated Record last modified

wasm3 project wasm3 DOWNGRADE

Affected: 139076a

Fixed in: no fixed release known

Safe to downgrade to: a release before 139076a

1. Check installed version

apt-cache policy wasm3 || rpm -q wasm3 || wasm3 --version

2. No fixed release: DOWNGRADE to a release before 139076a (Debian / Ubuntu)

apt-cache madison wasm3 sudo apt install wasm3=<VERSION_BEFORE_139076a> sudo apt-mark hold wasm3

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list wasm3 sudo dnf downgrade wasm3-<VERSION_BEFORE_139076a> sudo dnf versionlock add wasm3

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-2024-27530?

wasm3: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2024-27530 being exploited?

CVE-2024-27530 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-2024-27530 affect?

CVE-2024-27530 affects wasm3. Severity is high (CVSS 8.4). wasm3 139076a contains a Use-After-Free in ForEachModule.

How urgent is CVE-2024-27530?

Priority 38/100. High severity; Public exploit reference

Related CVEs

CVE-2025-15413 MEDIUM 5.3 UPGRADE A vulnerability was detected in wasm3 up to 0.5.0
CVE-2025-15572 LOW 3.3 UPGRADE A vulnerability has been found in wasm3 up to 0.5.0
CVE-2024-27529 HIGH 8.4 DOWNGRADE wasm3 139076a contains memory leaks in Read_utf8.
CVE-2024-27528 HIGH 8.4 DOWNGRADE wasm3 139076a suffers from Invalid Memory Read, leading to DoS and potential Code Execution.
CVE-2024-27527 HIGH 7.5 DOWNGRADE wasm3 139076a is vulnerable to Denial of Service (DoS).

References

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