CVE-2026-111135 libfwsi through 20260522 Heap Out-of-Bounds Read via libfwsi_mtp_volume_values_read_data
Attackers can cause denial of service or read sensitive memory by crafting malicious MTP volume shell items in files processed by libfwsi.
- 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-2026-111135?
CVE-2026-111135 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_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.
Weakness: CWE-125
Which versions are affected by CVE-2026-111135?
How do I fix CVE-2026-111135?
No fix has been published for CVE-2026-111135 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-2026-111135 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111135 exists.
Sources
Also known as DEBIAN-CVE-2026-111135, GHSA-7h63-p8xp-f7mw, UBUNTU-CVE-2026-111135.