{"id":"CVE-2026-86095","title":"Unidata netcdf-c through 4.10.1 contains an out-of-bounds write vulnerability in NC4_HDF5_inq_attname() that copies HDF5 attribute names into a fixed 256-byte buffer without length validation","summary":"Unidata netcdf-c through 4.10.1 contains an out-of-bounds write vulnerability in NC4_HDF5_inq_attname() that copies HDF5 attribute names into a fixed 256-byte buffer without length validation. Attackers can craft HDF5 files with oversize…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-787"],"vendor":"Unidata","product":"netcdf-c","affected":["netcdf-c <= 4.10.1"],"published":"2026-09-04","updated":"2026-09-24","sourceUpdated":"2026-09-24T20:43:32.537","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86095","references":[{"url":"https://github.com/Unidata/netcdf-c","label":"disclosure@vulncheck.com"},{"url":"https://github.com/Unidata/netcdf-c/blob/v4.10.1/libhdf5/hdf5attr.c","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/unidata-netcdf-c-through-4.10.1-out-of-bounds-write-via-oversized-hdf5-attribute-name","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"epss":0.00184,"epssPercentile":0.07083,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-08T17:44:45.853980Z"},"ingestedAt":"2026-09-08T19:08:49.595Z","slug":"CVE-2026-86095","body":"## Overview\n\nUnidata netcdf-c through 4.10.1 contains an out-of-bounds write vulnerability in NC4_HDF5_inq_attname() that copies HDF5 attribute names into a fixed 256-byte buffer without length validation. Attackers can craft HDF5 files with oversized attribute names to overflow the destination buffer, causing memory corruption and crashes when applications enumerate attribute names.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}