CVE-2026-116743 libyal libmsiecf through 20260525 Double Free via libmsiecf_url_values_read_data

Medium 6.8 Published 26 Oct 2026 Updated 26 Oct 2026

Exploited in the wild: Not known
Fix: None listed

What is CVE-2026-116743?

CVE-2026-116743 is a medium-severity vulnerability in libyal libmsiecf, published on 26 Oct 2026.

Official description

libyal libmsiecf through 20260525 contains a double free vulnerability in libmsiecf_url_values_read_data() that allows attackers to corrupt heap memory via crafted partial URL records. Attackers can supply a crafted MSIE cache index.dat file whose recovered partial record has an oversized unknown_offset, crashing forensic tools processing it.

Weakness: CWE-415

Which versions are affected by CVE-2026-116743?

How do I fix CVE-2026-116743?

No fix has been published for CVE-2026-116743 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-116743 being exploited?

There is no known exploitation of CVE-2026-116743 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2026-116743, GHSA-69hw-fmf2-8wv2, UBUNTU-CVE-2026-116743.