CVE-2025-6273
WebAssembly wabt binary-reader-objdump.cc LogOpcode assertion
- State
- Published
- Severity
- 4.8 Medium
- Published
- Jun 19, 2025
- Updated
- Jun 23, 2025
- Reserved
- Jun 19, 2025
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".
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | 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 | VulDB |
| 3.1 | 3.3 Low | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 3.0 | 3.3 Low | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 1.7 Low | AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
- CWE-617 Reachable Assertion
Affected Products
| Product | Versions |
|---|---|
wabtWebAssembly |
|
References
- VDB-313277 | WebAssembly wabt binary-reader-objdump.cc LogOpcode assertionvdb-entrytechnical-description
- VDB-313277 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- Submit #593010 | WebAssembly wabt wabt 1.0.37 (commit a60eb26) Reachable Assertionthird-party-advisory
- https://github.com/WebAssembly/wabt/issues/2574issue-tracking
- https://github.com/user-attachments/files/19529411/wabt_crash.txtexploit
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