What’s Vulnerable › Vulnerabilities

CVE-2026-116737: libphdi through 20260902 Heap Out-of-Bounds Read via Extent Data File Path

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-26 · updated 2026-10-27
• Weakness: CWE-131

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.

Affected products

• libyal libphdi: through 20260902

References

• https://github.com/libyal/libphdi
• https://github.com/libyal/libphdi/blob/20260902/libphdi/libphdi_data_files.c#L890-L907
• https://github.com/libyal/libphdi/commit/61e3e1f6b4c5e15ce827b11858ba51f0dba254e3
• https://github.com/libyal/libphdi/issues/6
• https://hackmd.io/@haindpwn/libphdi-extent-data-file-path-heap-oob-read
• https://www.vulncheck.com/advisories/libphdi-through-20260902-heap-out-of-bounds-read-via-extent-data-file-path

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