CVE-2026-111134
libfwsi through 20260522 Heap Out-of-Bounds Read via libfwsi_mtp_file_entry_values_read_data
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
libfwsi through 20260522 contains a heap out-of-bounds read vulnerability in libfwsi_mtp_file_entry_values_read_data() that allows attackers to read past buffer bounds via crafted MTP file entry shell items. Attackers can embed a 10 to 73 byte shell item with item data size of 44 or more in .lnk files, jump lists or shell bags to crash libfwsi consumers.
| CWE | CWE-125 |
| Vendor | libyal |
| Product | libfwsi |
| Published | Oct 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
libyal / libfwsi
0 ≤ 20260522
References
hackmd.io: https://hackmd.io/@haind-pwn/libfwsi-mtp-values-oob-read github.com: https://github.com/libyal/libfwsi/blob/2f2aba25b888f37314a39d8c3e71c0e3ced56e59/libfwsi/libfwsi_mtp_file_entry_values.c#L245-L267 github.com: https://github.com/libyal/libfwsi vulncheck.com: https://www.vulncheck.com/advisories/libfwsi-through-20260522-heap-out-of-bounds-read-via-libfwsi-mtp-file-entry-values-read-data
Credits
HaiND from the Post and Telecommunication Institute of Technology