Wasmtime
Vendor:
First CVE: Sep 17, 2021 · Active for 4 years
41
Total CVEs
More Total CVEs than 97% of tracked products
6.8
Avg CVEs / Year
Higher CVE frequency than 92% of tracked products
6.8
Avg CVSS
Higher Avg CVSS than 36% of tracked products
0.0%
KEV Rate
Bottom 1%
Trends Over Time
The number and severity of CVEs published that impact Wasmtime over time
Volume of CVEsAvg CVSS Base Score
First CVE
Sep 17, 2021
4 years ago
Most Recent CVE
Jul 1, 2026
23 days ago
CVE Severity & Scoring
Wasmtime41 CVEs
10%
41%
37%
12%
All CVEs352,231 CVEs
45%
40%
11%
LowMediumHighCritical
Attack Vector
Local9 (22.0%)
Network32 (78.0%)
Unknown0 (0.0%)
Physical0 (0.0%)
Adjacent Network0 (0.0%)
Attack Complexity
Low31 (75.6%)
High10 (24.4%)
Unknown0 (0.0%)
User Interaction
None36 (87.8%)
Unknown0 (0.0%)
Required5 (12.2%)
Privileges Required
Low23 (56.1%)
High1 (2.4%)
None17 (41.5%)
Unknown0 (0.0%)
Top CVEs
Signals from CVEs in this product scope (41 CVEs).
41 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2026-34987CRITICAL Wasmtime is a runtime for WebAssembly. From 25.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime with its Winch (baseline) non-default compiler backend may allow properly construc | Apr 9, 2026 | 9.9 | 32 | NO | NO |
CVE-2026-34971HIGH Wasmtime is a runtime for WebAssembly. From 32.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime's Cranelift compilation backend contains a bug on aarch64 when performing a certai | Apr 9, 2026 | 8.5 | 32 | NO | NO |
CVE-2023-26489CRITICAL wasmtime is a fast and secure runtime for WebAssembly. In affected versions wasmtime's code generator, Cranelift, has a bug on x86_64 targets where address-mode computation mistake | Mar 8, 2023 | 9.9 | 31 | NO | NO |
CVE-2022-24791CRITICAL Wasmtime is a standalone JIT-style runtime for WebAssembly, using Cranelift. There is a use after free vulnerability in Wasmtime when both running Wasm that uses externrefs and ena | Mar 31, 2022 | 9.8 | 30 | NO | NO |
CVE-2026-35186HIGH Wasmtime is a runtime for WebAssembly. From 25.0.0 to before 36.0.7, 42.0.2, and 43.0.1, Wasmtime's Winch compiler backend contains a bug where translating the table.grow operator | Apr 9, 2026 | 7.5 | 29 | NO | NO |
CVE-2022-39394CRITICAL Wasmtime is a standalone runtime for WebAssembly. Prior to version 2.0.2, there is a bug in Wasmtime's C API implementation where the definition of the `wasmtime_trap_code` does no | Nov 10, 2022 | 9.8 | 29 | NO | NO |
CVE-2026-54786MEDIUM Wasmtime is a runtime for WebAssembly. All versions prior to 24.0.10; versions 25.0.0 through those before 36.0.11; versions 37.0.0 through those before 44.0.3; and versions 45.0. | Jul 1, 2026 | 5.0 | 28 | NO | NO |
CVE-2026-44216HIGH Wasmtime is a runtime for WebAssembly. From 30.0.0 to 36.0.8, 43.0.2, and 44.0.1, Wasmtime's allocation logic for a WebAssembly table contained checked arithmetic which panicked on | May 14, 2026 | 7.5 | 28 | NO | NO |
CVE-2022-39393HIGH Wasmtime is a standalone runtime for WebAssembly. Prior to versions 2.0.2 and 1.0.2, there is a bug in Wasmtime's implementation of its pooling instance allocator where when a line | Nov 10, 2022 | 8.6 | 28 | NO | NO |
CVE-2024-51745CRITICAL Wasmtime is a fast and secure runtime for WebAssembly. Wasmtime's filesystem sandbox implementation on Windows blocks access to special device filenames such as "COM1", "COM2", "LP | Nov 5, 2024 | 10.0 | 27 | NO | NO |
Exploit Exposure
Signals from CVEs in this product scope (41 CVEs).
CISA KEV
0 CVEs
0.0% of CVEs· Bottom 1%
Metasploit
0 CVEs
0.0% of CVEs· Bottom 1%
Nuclei
0 CVEs
0.0% of CVEs· Bottom 1%
ExploitDB
0 CVEs
0.0% of CVEs· Bottom 1%
Social Chatter
Signals from CVEs in this product scope (41 CVEs).
Media Mentions
Signals from CVEs in this product scope (41 CVEs).
Top CNAs Publishing CVEs For Wasmtime
Top CWEs
Versions
| Version | CVE Count | Avg CVSS | Avg EPSS | KEV | Exploits |
|---|---|---|---|---|---|
| 8.0.0 | 1 | 8.8 | 0.4% | 0 | 0 |
| 7.0.0 | 1 | 8.8 | 0.4% | 0 | 0 |
| 6.0.0 | 2 | 7.1 | 0.9% | 0 | 0 |
| 5.0.0 | 2 | 7.1 | 0.9% | 0 | 0 |
| 44.0.0 | 1 | 7.5 | 0.3% | 0 | 0 |
| 43.0.0 | 6 | 7.1 | 0.2% | 0 | 0 |
| 37.0.1 | 1 | 3.3 | 0.2% | 0 | 0 |
| 37.0.0 | 1 | 3.3 | 0.2% | 0 | 0 |
| 26.0.0 | 1 | 10.0 | 0.8% | 0 | 0 |
| 25.0.2 | 1 | 10.0 | 0.8% | 0 | 0 |
| 25.0.1 | 3 | 6.1 | 0.4% | 0 | 0 |
| 25.0.0 | 3 | 6.1 | 0.4% | 0 | 0 |
| 24.0.0 | 2 | 4.2 | 0.2% | 0 | 0 |
| 23.0.2 | 2 | 4.2 | 0.2% | 0 | 0 |
| 23.0.1 | 2 | 4.2 | 0.2% | 0 | 0 |
| 23.0.0 | 2 | 4.2 | 0.2% | 0 | 0 |
| 22.0.0 | 2 | 4.2 | 0.2% | 0 | 0 |
| 21.0.1 | 2 | 4.2 | 0.2% | 0 | 0 |
| 21.0.0 | 2 | 4.2 | 0.2% | 0 | 0 |
| 20.0.2 | 1 | 2.9 | 0.1% | 0 | 0 |