CVE-2026-111134 libfwsi through 20260522 Heap Out-of-Bounds Read via libfwsi_mtp_file_entry_values_read_data
Attackers can cause crashes or read memory via crafted MTP file entries in libfwsi, affecting applications processing shell items.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-111134?
CVE-2026-111134 is a medium-severity memory corruption vulnerability in libyal libfwsi, published on 15 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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
Which versions are affected by CVE-2026-111134?
How do I fix CVE-2026-111134?
No fix has been published for CVE-2026-111134 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-111134 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111134 exists.
Sources
Also known as DEBIAN-CVE-2026-111134, GHSA-6mh6-95hc-pr4c, UBUNTU-CVE-2026-111134.