CVE-2026-111134

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.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/libyal/libfwsi
https://github.com/libyal/libfwsi/blob/2f2aba25b888f37314a39d8c3e71c0e3ced56e59/libfwsi/libfwsi_mtp_file_entry_values.c#L245-L267
https://hackmd.io/@haind-pwn/libfwsi-mtp-values-oob-read
https://www.vulncheck.com/advisories/libfwsi-through-20260522-heap-out-of-bounds-read-via-libfwsi-mtp-file-entry-values-read-data
https://hackmd.io/@haind-pwn/libfwsi-mtp-values-oob-read

Configurations

No configuration.

History

26 Oct 2026, 15:16

Type	Values Removed	Values Added
References	~~() https://hackmd.io/@haind-pwn/libfwsi-mtp-values-oob-read -~~	() https://hackmd.io/@haind-pwn/libfwsi-mtp-values-oob-read -

15 Oct 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-15 19:17

Updated : 2026-10-26 15:16

NVD link : CVE-2026-111134

Mitre link : CVE-2026-111134

CVE.ORG link : CVE-2026-111134

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

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