CVE-2026-111135 Details
Description
libfwsi through 20260522 contains a heap out-of-bounds read vulnerability in libfwsi_mtp_volume_values_read_data() that allows attackers to read past buffer bounds via crafted MTP volume shell items. Attackers can embed a 10 to 53 byte shell item with item data size of 44 or more in a .lnk file, jump list or shell bag to crash consuming processes.
A heap out-of-bounds read vulnerability has been identified in the libfwsi library, specifically in the MTP volume values parser. This vulnerability allows attackers to read beyond buffer boundaries by crafting MTP volume shell items. The issue arises from improper handling of item data sizes, enabling reads of up to 44 bytes past the allocated buffer, which can lead to process crashes. The vulnerability is present in libfwsi versions through 20260522.
Users can update to the latest version of libfwsi, where this vulnerability has been addressed. Instructions for updating can be found in the project's documentation.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 15, 2026CISA-ADP
Assessed Oct 21, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-125 | Out-of-bounds Read | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| libfwsi | <= 20260522 |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 21, 2026 | CVE Modified | CISA-ADP |
| Oct 15, 2026 | New CVE Received | [email protected] |