Medium severity · published Oct 15, 2026
CVE-2026-111159
libewf through 20260924 Heap Out-of-Bounds Read via L01 Extended Attribute Parsing
6.1
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
libewf · libyal
through 20260924 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111159
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111159
github.com
https://github.com/libyal/libewf
github.com
https://github.com/libyal/libewf/blob/d76fd0bb21601e2969bc88ffdaeb861023f6a5b2/libewf/libewf_lef_extended_attribute.c#L362-L408
github.com
https://github.com/libyal/libewf/blob/d76fd0bb21601e2969bc88ffdaeb861023f6a5b2/libewf/libewf_lef_extended_attribute.c#L456-L560
hackmd.io
https://hackmd.io/@haind-pwn/libewf-lef-extended-attribute-utf16-size-oob-read
www.vulncheck.com
https://www.vulncheck.com/advisories/libewf-through-20260924-heap-out-of-bounds-read-via-l01-extended-attribute-parsing