CVE-2025-6273

Name: CVE-2025-6273
Creator: NVD / NIST
Published: 2025-06-19T19:15:21.8+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 1.9/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2025-6273 is a low-severity vulnerability rated 1.9/10 on the CVSS scale. 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. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

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".

Metrics

CVSS 3.1

3.3/10

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

CVSS 4.0

1.9/10

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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

EPSS Probability

0.19%

8.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-617

Affected Software

Vendor	Product	Versions
Webassembly	Wabt	<= 1.0.37

References

https://github.com/WebAssembly/wabt/issues/2574Exploit, Issue Tracking, Vendor Advisory
https://github.com/user-attachments/files/19529411/wabt_crash.txtExploit
https://vuldb.com/?ctiid.313277Permissions Required, VDB Entry
https://vuldb.com/?id.313277Third Party Advisory, VDB Entry
https://vuldb.com/?submit.593010Third Party Advisory, VDB Entry
https://github.com/WebAssembly/wabt/issues/2574Exploit, Issue Tracking, Vendor Advisory

Timeline

Published: Jun 19, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-6273?

How severe is CVE-2025-6273?

CVE-2025-6273 has a CVSS score of 1.9/10 (LOW severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2025-6273?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-6273?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST