Is CVE-2026-111159 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-111159 being exploited in the wild.

How severe is CVE-2026-111159?

Medium severity, with a CVSS score of 6.1, published 15 October 2026.

Which products and versions are affected?

Libyal Libewf through 20260924.

Is there a fix for CVE-2026-111159?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-111159 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-111159?

Check whether you run Libyal Libewf at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-111159: libewf heap out-of-bounds read in extended attribute parsing

CVE-2026-111159 · Severity: medium · CVSS 6.1 · Published 2026-10-15

libewf is a library for reading forensic disk images in Expert Witness Format (EWF). A flaw in its extended attribute parsing allows an attacker to supply a malicious EWF file that crashes the application or exposes uninitialized data from memory. An analyst processing untrusted forensic files could have their tools crash or sensitive information leaked.

Vendors: Libyal.

Quick answers

Is CVE-2026-111159 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-111159 being exploited in the wild.
How severe is CVE-2026-111159?: Medium severity, with a CVSS score of 6.1, published 15 October 2026.
Which products and versions are affected?: Libyal Libewf through 20260924.
Is there a fix for CVE-2026-111159?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-111159 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-111159?: Check whether you run Libyal Libewf at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is a heap out-of-bounds read in libewf_lef_extended_attribute_read_data() where UTF-16 name and value sizes are validated before being doubled for byte conversion, leading to integer overflow. An attacker can craft a .L01/.Lx01 EWF file with oversized extended attribute metadata counts to trigger the read. The flaw requires file parsing but no authentication or user interaction beyond opening the file.

Affected products

libyal libewf through 20260924

Timeline

2026-10-15: disclosed

References

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