CVE Tools
Sign in

CVE-2025-6273

WebAssembly wabt binary-reader-objdump.cc LogOpcode assertion

Published: Jun 19, 2025Updated: Apr 29, 2026 Sources: CVE List NVDCWE-617
NVD MITRE
3.3CVSSLOW
EPSS Score
0.2%
Top 91.4%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available

Description

A vulnerability was found in WebAssembly wabt up to 1.0.37 and classified as problematic. This issue affects the function LogOpcode of the file src/binary-reader-objdump.cc. The manipulation leads to reachable assertion. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The code maintainer explains that this issue might not affect "real world wasm programs".

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:NI:NA:L
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-617

Affected Products

wabtwebassembly
Library
OSS Libraries / generic-library
wabtWebAssembly
Library
OSS Libraries / generic-library
webassemblyoss-projectOSS Librariesaka webassembly

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/WebAssembly/wabt/issues/2574
github.com
https://github.com/user-attachments/files/19529411/wabt_crash.txt
github.com
https://vuldb.com/?ctiid.313277
vuldb.com
and 2 more references View all →

Timeline

Published
Jun 19, 2025
Last Updated
Apr 29, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2025-6273 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows