Vulnerability in Libyal Libphdi
CVE-2026-116737
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.
Published .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/libyal/libphdi/issues/6 (issue-tracking)
- github.com/libyal/libphdi (product)
- github.com/libyal/libphdi/commit/61e3e1f6b4c5e15ce827b11858ba51f0dba254e3 (patch)
- github.com/libyal/libphdi/blob/20260902/libphdi/libphdi_data_files.c (technical-description)
- hackmd.io/@haindpwn/libphdi-extent-data-file-path-heap-oob-read (third-party-advisory)
- www.vulncheck.com/advisories/libphdi-through-20260902-heap-out-of-bounds-read-v… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116737?
- CVE-2026-116737 is a medium-severity vulnerability in Libyal Libphdi, classified under Incorrect Calculation of Buffer Size. CVSS score: 6.1/10. Published 2026-10-26.
- How severe is CVE-2026-116737?
- Medium severity. CVSS v3 base score is 6.1 out of 10.