CVE-2026-115386
LOWDescription
Wasmtime before 36.0.17, 37.0.0 before 48.0.4, and 49.0.0 before 49.0.2 contains an information disclosure vulnerability in the WASIp1 fd_readdir implementation that copies uninitialized struct padding into guest memory. Guests with a preopened directory can list entries to receive three bytes of leftover host stack or heap memory per directory entry.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N
Exploit Intelligence
EPSS data unavailable for this CVE.
References
Related Vulnerabilities
Other CWE-908 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2025-5777 | High | 7.5 | 100% | KEV + Ransom | Fix |
| CVE-2023-24941 | Critical | 9.8 | 95% | - | Fix |
| CVE-2007-1751 | High | 9.3 | 61% | - | - |
| CVE-2008-0081 | Critical | 9.8 | 58% | - | - |
| CVE-2020-1934 | Medium | 5.3 | 52% | - | Fix |
| CVE-2011-1255 | High | 9.3 | 42% | - | - |
Common questions
How do I fix CVE-2026-115386?
No published fix for CVE-2026-115386 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
How severe is CVE-2026-115386?
CVE-2026-115386 has a CVSS v3 base score of 2.6, rated low. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-22.