CVE-2026-34983
LOW
1,0
Source: [email protected]
Attack Vector: physical
Attack Complexity: high
Privileges Required: high
User Interaction: active
Confidentiality: N/A
Integrity: N/A
Availability: N/A
MEDIUM
5,0
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: low
User Interaction: required
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Description
AI Translation Available
Wasmtime is a runtime for WebAssembly. In 43.0.0, cloning a wasmtime::Linker is unsound and can result in use-after-free bugs. This bug is not controllable by guest Wasm programs. It can only be triggered by a specific sequence of embedder API calls made by the host. Specifically, the following steps must occur to trigger the bug clone a wasmtime::Linker, drop the original linker instance, use the new, cloned linker instance, resulting in a use-after-free. This vulnerability is fixed in 43.0.1.
EPSS (Exploit Prediction Scoring System)
Trend Analysis
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score
0,0002
Percentile
0,0th
Updated
EPSS Score Trend (Last 7 Days)
416
Use After Free
StableCommon Consequences
Security Scopes Affected:
Integrity
Availability
Confidentiality
Potential Impacts:
Modify Memory
Dos: Crash, Exit, Or Restart
Execute Unauthorized Code Or Commands
Applicable Platforms
Languages:
C, C++, Memory-Unsafe
Application
Wasmtime by Bytecodealliance
CPE Identifier
View Detailed Analysis
cpe:2.3:a:bytecodealliance:wasmtime:43.0.0:*:*:*:*:rust:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hfr4-7c6c…
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-hfr4-7c6c…