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CVE-2025-15412

25
FAUCET Score

CVE-2025-15412 is an out-of-bounds read vulnerability in the wabt::Decompiler::VarName function of the wasm-decompile component within WebAssembly wabt versions up to 1.0.39. This vulnerability carries a CVSS score of 7.8 (HIGH), indicating a significant impact with high confidentiality, integrity, and availability risks, requiring local access and low attack complexity. While the exploit has been publicly disclosed, there is no evidence of active exploitation, and no known exploit tools like Metasploit or Nuclei modules exist. Community discussion and media coverage are minimal, and the project currently lacks an active maintainer.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.39CPE matchmatch criteria
cpe:2.3:a:webassembly:wabt:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

1.9LOW

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
LOW
VS Integrity
LOW
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
PROOF_OF_CONCEPT
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.18%
Probability of exploitation in next 30 days
EPSS Percentile
7.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0018 is in the 31st percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2025-15412Moderate

wabt: wabt: Arbitrary code execution, information disclosure, and denial of service via out-of-bounds read

Jan 1, 2026

References

github.com / oneafter/1208/blob/main/af1
Exploit
github.com / WebAssembly/wabt
github.com / WebAssembly/wabt/issues/2678
ExploitIssue TrackingVendor Advisory
vuldb.com
Permissions RequiredVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry
vuldb.com
Third Party AdvisoryVDB Entry