CVE-2025-6273

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 v3.1 Score

3.3

LOW

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

Weakness Type (CWE)

CWE-617 CWE-617

Affected Products

Vendor	Product	Versions
webassembly	wabt	< 1.0.37

References

Advisories & Patches

https://github.com/WebAssembly/wabt/issues/2574 https://github.com/WebAssembly/wabt/issues/2574

Exploits

https://github.com/WebAssembly/wabt/issues/2574 https://github.com/user-attachments/files/19529411/wabt_crash.txt https://github.com/WebAssembly/wabt/issues/2574

Other References

https://vuldb.com/?ctiid.313277 https://vuldb.com/?id.313277 https://vuldb.com/?submit.593010

Frequently Asked Questions

What is CVE-2025-6273? +

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". It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2025-6273? +

CVE-2025-6273 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-6273? +

CVE-2025-6273 affects products from webassembly, specifically: wabt. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-6273? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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