CVE-2024-27528: wasm3 139076a suffers from Invalid Memory Read, leading to DoS and potential Code Execution.

Routine

HIGH 8.4DOWNGRADE

CVE-2024-27528 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 suffers from Invalid Memory Read, leading to DoS and potential Code Execution.

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 85%)
CISA exploited list	No
Weakness	CWE-125
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-2024-27528?

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

Is CVE-2024-27528 being exploited?

CVE-2024-27528 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-2024-27528 affect?

CVE-2024-27528 affects wasm3. Severity is high (CVSS 8.4). wasm3 139076a suffers from Invalid Memory Read, leading to DoS and potential Code Execution.

How urgent is CVE-2024-27528?

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-2024-27530 HIGH 8.4 DOWNGRADE wasm3 139076a contains a Use-After-Free in ForEachModule.
CVE-2024-27529 HIGH 8.4 DOWNGRADE wasm3 139076a contains memory leaks in Read_utf8.
CVE-2024-27527 HIGH 7.5 DOWNGRADE wasm3 139076a is vulnerable to Denial of Service (DoS).

References

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