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CVE-2023-46331

20
FAUCET Score

CVE-2023-46331 is an out-of-bounds memory read vulnerability in WebAssembly Binary Toolkit (wabt) version 1.0.33, specifically within the DataSegment::IsValidRange() function. This flaw can lead to a denial of service via a segmentation fault. Rated as medium severity with a CVSS score of 5.5, it requires local access and user interaction for exploitation, resulting in high availability impact but no confidentiality or integrity impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.33CPE matchmatch criteria
cpe:2.3:a:webassembly:webassembly_binary_toolkit:1.0.33:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.21%
Probability of exploitation in next 30 days
EPSS Percentile
10.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0021 is in the 14th percentile among its peer group of 5,758 CVEs.

Social Chatter

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

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

References

github.com / WebAssembly/wabt/issues/2310
Issue TrackingVendor Advisory