CVE-2024-27527: wasm3 139076a is vulnerable to Denial of Service (DoS).

This week

HIGH 7.5REMOTEDOWNGRADE

CVE-2024-27527 is a high-severity flaw (CVSS 7.5) affecting wasm3. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

wasm3 139076a is vulnerable to Denial of Service (DoS).

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-404
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-2024-27527?

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

Is CVE-2024-27527 being exploited?

CVE-2024-27527 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-2024-27527 affect?

CVE-2024-27527 affects wasm3. Severity is high (CVSS 7.5). wasm3 139076a is vulnerable to Denial of Service (DoS).

How urgent is CVE-2024-27527?

Priority 46/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

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-2024-34252 HIGH 7.5 DOWNGRADE wasm3 v0.5.0 was discovered to contain a global buffer overflow which leads to segmentation fault via the func
CVE-2024-34249 CRITICAL 9.8 DOWNGRADE wasm3 v0.5.0 was discovered to contain a heap buffer overflow which leads to segmentation fault via the functi
CVE-2024-34246 HIGH 7.5 DOWNGRADE wasm3 v0.5.0 was discovered to contain an out-of-bound memory read which leads to segmentation fault via the f

References

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