What’s Vulnerable › Vulnerabilities

CVE-2025-6272: wasm3 m3_compile.c MarkSlotAllocated out-of-bounds write

• Severity: low (CVSS 3.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-06-19 · updated 2026-06-17
• Weakness: CWE-119

Description

A vulnerability has been found in wasm3 0.5.0 and classified as problematic. This vulnerability affects the function MarkSlotAllocated of the file source/m3_compile.c. The manipulation leads to out-of-bounds write. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.

Affected products

• wasm3: 0.5.0

References

• https://github.com/user-attachments/files/19516600/wasm3_crash.txt
• https://github.com/wasm3/wasm3/issues/531
• https://vuldb.com/?ctiid.313276
• https://vuldb.com/?id.313276
• https://vuldb.com/?submit.593008
• https://github.com/wasm3/wasm3/issues/531

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