wasm3 v0.5.0 was discovered to contain a global buffer overflow which leads to…
Priority HIGH 74CWE-120Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-120 and the CVSS impact.
Summary
wasm3 v0.5.0 was discovered to contain a global buffer overflow which leads to segmentation fault via the function "PreserveRegisterIfOccupied" in wasm3/source/m3_compile.c.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00627 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | pywasm3 (PyPI) | up to 0.5.0 | — | No fix listed | GHSA-hh39-vjv8-j337 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- pywasm3 (PyPI) Vendor— Affected up to 0.5.0 Fixed in — No fix listed GHSA-hh39-vjv8-j337
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wasm3_project:wasm3:0.5.0:*:*:*:*:*:*:* | 0.5.0 | Vulnerable | Wasm3 Project |
- cpe:2.3:a:wasm3_project:wasm3:0.5.0:*:*:*:*:*:*:* Versions 0.5.0 Vulnerable ·Wasm3 Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-34252
- 2026-10-03 Alias added: GHSA-hh39-vjv8-j337
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
More Wasm3 Project Wasm3 vulnerabilities
- TI-2024-18299 wasm3 139076a contains a Use-After-Free in ForEachModule. CVSS 3.1HIGH 8.4
- TI-2024-18298 wasm3 139076a contains memory leaks in Read_utf8. CVSS 3.1HIGH 8.4
- TI-2024-18297 wasm3 139076a suffers from Invalid Memory Read, leading to DoS and potential Code Execution. CVSS 3.1HIGH 8.4
- TI-2024-18296 wasm3 139076a is vulnerable to Denial of Service (DoS). CVSS 3.1HIGH 7.5
- TI-2022-18927 WASM3 v0.5.0 was discovered to contain a segmentation fault via the component… CVSS 3.1HIGH 7.5
- TI-2025-14211 wasm3 NewCodePage memory leak CVSS 4.0MEDIUM 4.8
Sources
- CVE-2024-34252 · CVE Program
- CVE-2024-34252 · NVD
- FIRST EPSS
- GHSA-hh39-vjv8-j337 · GitHub Advisory Database · CC BY 4.0
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