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CVE-2022-31169

23
FAUCET Score

CVE-2022-31169 is a bug in Wasmtime's Cranelift code generator for AArch64 targets, affecting Wasmtime prior to version 0.38.2 and Cranelift prior to 0.85.2. Incorrect constant divisor handling can lead to erroneous division results at runtime, causing WebAssembly programs to deviate from specification within the sandbox. With a CVSS score of 7.5 (HIGH), this vulnerability has a network attack vector and low attack complexity, potentially leading to high integrity impact on guest programs, though not directly impacting host systems. There is no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.85.1CPE matchmatch criteria
cpe:2.3:a:bytecodealliance:cranelift-codegen:*:*:*:*:*:rust:*:*
< 0.38.1CPE matchmatch criteria
cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.79%
Probability of exploitation in next 30 days
EPSS Percentile
52.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0079 is in the 28th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

github_advisorypatch availablevia nvd_reference
View patch
rustpatch availablevia ghsa
Product: wasmtimeFixed in: 0.38.2
rustpatch availablevia ghsa
Product: cranelift-codegenFixed in: 0.85.2

Vendor Advisories (1)

rustGHSA-7f6x-jwh5-m9r4medium

Cranelift vulnerable to miscompilation of constant values in division on AArch64

Jul 21, 2022

References

github.com / bytecodealliance/wasmtime/commit/2ba4bce5cc719e5a74e571a534424614e62ecc41
PatchThird Party Advisory
github.com / bytecodealliance/wasmtime/security/advisories/GHSA-7f6x-jwh5-m9r4
Third Party Advisory