{"id":"CVE-2026-35547","aliases":["EUVD-2026-26355","GHSA-wq83-w9r6-h456"],"status":"published","title":"Heap overflow in libnv","description":"When processing the header of an incoming message, libnv failed to properly validate the message size.\n\nThe lack of validation allows a malicious program to write outside the bounds of a heap allocation.  This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00316,"percentile":0.24789,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122","CWE-130"],"published":"2026-04-30T08:08:13Z","modified":"2026-06-17T10:40:45Z","products":[{"vendor":"freebsd","product":"freebsd"}],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:17.libnv.asc","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35547"},{"url":"https://github.com/advisories/GHSA-wq83-w9r6-h456"}],"sources":{"cve":[{"id":"CVE-2026-35547","title":"Heap overflow in libnv","description":"When processing the header of an incoming message, libnv failed to properly validate the message size.\n\nThe lack of validation allows a malicious program to write outside the bounds of a heap allocation.  This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.","status":"published","published":"2026-04-30T08:08:13.461Z","modified":"2026-05-01T15:26:28.941Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-122","CWE-130"],"updated_at":"2026-11-02T14:20:05.505362Z"}],"euvd":[{"id":"EUVD-2026-26355","description":"When processing the header of an incoming message, libnv failed to properly validate the message size.\n\nThe lack of validation allows a malicious program to write outside the bounds of a heap allocation.  This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.","status":"published","published":"2026-04-30T08:08:13Z","modified":"2026-05-01T15:26:28Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T19:05:18.723006Z"}],"ghsa":[{"id":"GHSA-wq83-w9r6-h456","title":"When processing the header of an incoming message, libnv failed to properly validate the message...","description":"When processing the header of an incoming message, libnv failed to properly validate the message size.\n\nThe lack of validation allows a malicious program to write outside the bounds of a heap allocation.  This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.","status":"published","published":"2026-04-30T09:30:25Z","modified":"2026-04-30T15:31:40Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"critical"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:07:52.236911Z"}],"nvd":[{"id":"CVE-2026-35547","description":"When processing the header of an incoming message, libnv failed to properly validate the message size.\n\nThe lack of validation allows a malicious program to write outside the bounds of a heap allocation.  This can trigger a crash or system panic, and it may be possible for an unprivileged user to exploit the bug to elevate their privileges.","status":"published","published":"2026-04-30T09:16:03.167Z","modified":"2026-06-17T10:40:45.567Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-122","CWE-130"],"updated_at":"2026-11-02T14:12:16.626888Z"}]}}