CVE-2026-111159 libewf through 20260924 Heap Out-of-Bounds Read via L01 Extended Attribute Parsing
Attackers can crash the application or leak heap memory by providing crafted L01 files to the libewf library.
- 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-2026-111159?
CVE-2026-111159 is a medium-severity memory corruption vulnerability in libyal libewf, 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
libewf through 20260924 contains a heap out-of-bounds read vulnerability in libewf_lef_extended_attribute_read_data() because UTF-16 name and value sizes are validated before being doubled. Attackers can supply a crafted .L01/.Lx01 file with oversized 'ea' metadata counts to crash the application or leak uninitialized heap memory through extended attributes.
Weakness: CWE-125
Which versions are affected by CVE-2026-111159?
How do I fix CVE-2026-111159?
No fix has been published for CVE-2026-111159 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-2026-111159 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111159 exists.
Sources
Also known as DEBIAN-CVE-2026-111159, GHSA-xjw3-jc7r-r4g6, UBUNTU-CVE-2026-111159.