CVE-2026-111134

CVSS 6.9 (medium) · published 2026-10-15

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.

Weakness: CWE-125

Source: NVD CVE-2026-111134

References

• 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

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