Medium severity · published Oct 26, 2026
CVE-2026-116737
libphdi through 20260902 Heap Out-of-Bounds Read via Extent Data File Path
New
6.1
CVSS
0.1%
EPSS
No
On KEV
Description
libphdi through 20260902 contains a heap out-of-bounds read vulnerability in libphdi_data_files_get_extent_data_file_path that uses the directory prefix length instead of the basename length. Attackers can supply a crafted Parallels disk image descriptor with a long directory prefix and short basename to crash the process or expose adjacent heap memory.
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
libphdi · libyal
through 20260902 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116737
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116737
github.com
https://github.com/libyal/libphdi
github.com
https://github.com/libyal/libphdi/blob/20260902/libphdi/libphdi_data_files.c#L890-L907
github.com
https://github.com/libyal/libphdi/commit/61e3e1f6b4c5e15ce827b11858ba51f0dba254e3
github.com
https://github.com/libyal/libphdi/issues/6
hackmd.io
https://hackmd.io/@haindpwn/libphdi-extent-data-file-path-heap-oob-read
www.vulncheck.com
https://www.vulncheck.com/advisories/libphdi-through-20260902-heap-out-of-bounds-read-via-extent-data-file-path