CVE-2022-39394 is a critical vulnerability affecting the Wasmtime C API, specifically the wasmtime_trap_code function in versions prior to 2.0.2. This out-of-bounds write (CWE-787) occurs due to a mismatch between the function's definition and declared signature, causing a 4-byte write into a 1-byte buffer. With a CVSS score of 9.8 (CRITICAL), this vulnerability has a network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. The FAUCET Risk Score is 92/100, indicating significant risk. While there is no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and it is not on the KEV catalog, the vulnerability has garnered significant community discussion with 10 mentions, suggesting awareness among security researchers.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.0.2CPE matchmatch criteria | cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:* | ||
>= 2.0.0, < 2.0.2CPE matchmatch criteria | cpe:2.3:a:bytecodealliance:wasmtime:*:*:*:*:*:rust:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.