CVE Explorer
CVE-2025-66627
Wasmi is a WebAssembly interpreter focused on constrained and embedded systems. In versions 0.41.0, 0.41.1, 0.42.0 through 0.47.1, 0.50.0 through 0.51.2 and 1.0.0, Wasmi's linear memory implementation leads to a Use After Free vulnerability, triggered by a WebAssembly module under certain memory growth conditions. This issue potentially leads to memory corruption, information disclosure, or code execution. This issue is fixed in versions 0.41.2, 0.47.1, 0.51.3 and 1.0.1. To workaround this issue
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"wasmi","vendor":"wasmi-labs","versions":[{"status":"affected","version":">= 0.41.0, < 0.41.2"},{"status":"affected","version":">= 0.42.0, < 0.47.1"},{"status":"affected","version":">= 0.50.0, < 0.51.3"},{"status":"affected","version":">= 1.0.0, < 1.0.1"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:a2f71184d66c68a43479d66a05e26820ae6ad0b49c000ec0c2625d6aa7121407 · sha256:44bba50ad3a5ec01… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":8.4,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:a2f71184d66c68a43479d66a05e26820ae6ad0b49c000ec0c2625d6aa7121407 · sha256:44bba50ad3a5ec01… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:a2f71184d66c68a43479d66a05e26820ae6ad0b49c000ec0c2625d6aa7121407 · sha256:44bba50ad3a5ec01… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"name":"https://github.com/wasmi-labs/wasmi/security/advisories/GHSA-g4v2-cjqp-rfmq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/wasmi-labs/wasmi/security/advisories/GHSA-g4v2-cjqp-rfmq"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:a2f71184d66c68a43479d66a05e26820ae6ad0b49c000ec0c2625d6aa7121407 · sha256:44bba50ad3a5ec01… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.