CVE-2018-16770: In WAVM through 2018-07-26, a crafted file sent to the WebAssembly Virtual Machine may cause a denial of servi

Q: How do I fix CVE-2018-16770?

webassembly virtual machine: upgrade to newer than 2018-07-26. Exact commands for each OS are on this page.

Q: Is CVE-2018-16770 being exploited?

CVE-2018-16770 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-16770 affect?

CVE-2018-16770 affects webassembly virtual machine. Severity is high (CVSS 8.8). In WAVM through 2018-07-26, a crafted file sent to the WebAssembly Virtual Machine may cause a denial of service (application crash) or possibly have unspecified other impact because a certain new_allocator allocate call fails.

Q: How urgent is CVE-2018-16770?

Priority 53/100. High severity; Public exploit reference

This month

HIGH 8.8UPGRADE

CVE-2018-16770 is a high-severity flaw (CVSS 8.8) affecting webassembly virtual machine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In WAVM through 2018-07-26, a crafted file sent to the WebAssembly Virtual Machine may cause a denial of service (application crash) or possibly have unspecified other impact because a certain new_allocator allocate call fails.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Published	2018-09-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: webassembly virtual machine project

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

Am I affected?

Timeline

2018-09-10 04:29 UTCPublished CVE record published
2026-06-17 01:44 UTCUpdated Record last modified

webassembly virtual machine project webassembly virtual machine UPGRADE

Affected: <= 2018-07-26

Fixed in: newer than 2018-07-26

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy webassembly-virtual-machine || rpm -q webassembly-virtual-machine || webassembly-virtual-machine --version

2. UPGRADE to newer than 2018-07-26 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade webassembly-virtual-machine

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webassembly-virtual-machine

Note

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

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-2018-16770?

webassembly virtual machine: upgrade to newer than 2018-07-26. Exact commands for each OS are on this page.

Is CVE-2018-16770 being exploited?

CVE-2018-16770 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-2018-16770 affect?

CVE-2018-16770 affects webassembly virtual machine. Severity is high (CVSS 8.8). In WAVM through 2018-07-26, a crafted file sent to the WebAssembly Virtual Machine may cause a denial of service (application crash) or possibly have unspecified other impact because a certain new_allocator allocate call fails.

How urgent is CVE-2018-16770?

Priority 53/100. High severity; Public exploit reference

Related CVEs

CVE-2018-17293 HIGH 8.8 UPGRADE An issue was discovered in WAVM before 2018-09-16
CVE-2018-17292 MEDIUM 6.5 UPGRADE An issue was discovered in WAVM before 2018-09-16
CVE-2018-16769 HIGH 8.8 UPGRADE In WAVM through 2018-07-26, a crafted file sent to the WebAssembly Virtual Machine may cause a denial of servi
CVE-2018-16768 HIGH 8.8 UPGRADE In WAVM through 2018-07-26, a crafted file sent to the WebAssembly Virtual Machine may cause a denial of servi
CVE-2018-16767 HIGH 8.8 UPGRADE In WAVM through 2018-07-26, a crafted file sent to the WebAssembly Virtual Machine may cause a denial of servi

References

← Back to latest CVEs