{"id":"CVE-2026-42483","aliases":["DEBIAN-CVE-2026-42483","EUVD-2026-26530","GHSA-h95h-gpf2-gm79","UBUNTU-CVE-2026-42483"],"status":"published","title":"A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to...","description":"A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects module_hash_decode in multiple Kerberos-related modules because account_info_len is calculated from untrusted delimiter positions without upper-bound validation before memcpy copies the data into a fixed-size account_info buffer.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00304,"percentile":0.23346,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122","CWE-787"],"published":"2026-05-01T00:00:00Z","modified":"2026-10-28T02:30:21Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"hashcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.6+ds1-1","6.2.6+ds2-1","7.1.2+ds1-1","7.1.2+ds1-2","7.1.2+ds1-3","7.1.2+ds1-4"]},{"source":"osv","ecosystem":"Debian:13","package":"hashcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.6+ds2-1","7.1.2+ds1-1","7.1.2+ds1-2","7.1.2+ds1-3","7.1.2+ds1-4"]},{"source":"osv","ecosystem":"Debian:14","package":"hashcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.6+ds2-1","7.1.2+ds1-1","7.1.2+ds1-2","7.1.2+ds1-3","7.1.2+ds1-4"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"hashcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.60-1","4.0.1-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"hashcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.1.0+ds1-1","5.1.0+ds1-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"hashcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.1.1+ds1-1","6.2.5+ds1-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"hashcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.6+ds1-1","6.2.6+ds1-1build1","6.2.6+ds1-1build2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"hashcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.6+ds2-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"hashcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.1.2+ds1-3","7.1.2+ds1-4"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"hashcat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2.6+ds2-1","7.1.2+ds1-3"]}],"products":[{"vendor":"hashcat","product":"hashcat"}],"references":[{"url":"https://gist.github.com/sgInnora/107f2eb20367e47d58c911e38d56a91f","tags":["exploit","Exploit","Mitigation","Third Party Advisory","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42483","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-h95h-gpf2-gm79"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42483.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-42483","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-42483","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-42483","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-42483","description":"A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects module_hash_decode in multiple Kerberos-related modules because account_info_len is calculated from untrusted delimiter positions without upper-bound validation before memcpy copies the data into a fixed-size account_info buffer.","status":"published","published":"2026-05-01T00:00:00Z","modified":"2026-05-01T17:36:27.198Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"adp"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T13:40:23.731501Z"}],"euvd":[{"id":"EUVD-2026-26530","description":"A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects module_hash_decode in multiple Kerberos-related modules because account_info_len is calculated from untrusted delimiter positions without upper-bound validation before memcpy copies the data into a fixed-size account_info buffer.","status":"published","published":"2026-05-01T00:00:00Z","modified":"2026-05-01T17:36:27Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T19:05:18.723006Z"}],"ghsa":[{"id":"GHSA-h95h-gpf2-gm79","title":"A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to...","description":"A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects module_hash_decode in multiple Kerberos-related modules because account_info_len is calculated from untrusted delimiter positions without upper-bound validation before memcpy copies the data into a fixed-size account_info buffer.","status":"published","published":"2026-05-01T15:30:33Z","modified":"2026-05-01T18:32:32Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-122","CWE-787"],"updated_at":"2026-11-02T15:07:52.84276Z"}],"nvd":[{"id":"CVE-2026-42483","description":"A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects module_hash_decode in multiple Kerberos-related modules because account_info_len is calculated from untrusted delimiter positions without upper-bound validation before memcpy copies the data into a fixed-size account_info buffer.","status":"published","published":"2026-05-01T14:16:22.687Z","modified":"2026-06-17T10:47:55.307Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-787","CWE-122"],"updated_at":"2026-11-02T14:12:16.626888Z"}],"osv":[{"id":"CVE-2026-42483","description":"A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects module_hash_decode in multiple Kerberos-related modules because account_info_len is calculated from untrusted delimiter positions without upper-bound validation before memcpy copies the data into a fixed-size account_info buffer.","status":"published","published":"2026-05-01T00:00:00Z","modified":"2026-10-28T02:30:21.061538207Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T15:45:04.117819Z"},{"id":"DEBIAN-CVE-2026-42483","description":"A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects module_hash_decode in multiple Kerberos-related modules because account_info_len is calculated from untrusted delimiter positions without upper-bound validation before memcpy copies the data into a fixed-size account_info buffer.","status":"published","published":"2026-05-01T14:16:22.687Z","modified":"2026-10-01T03:03:04.859066976Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:55.251751Z"},{"id":"UBUNTU-CVE-2026-42483","description":"A heap-based buffer overflow in the Kerberos hash parser in hashcat v7.1.2 allows an attacker to cause a denial of service or possibly execute arbitrary code via a crafted Kerberos hash file. The issue affects module_hash_decode in multiple Kerberos-related modules because account_info_len is calculated from untrusted delimiter positions without upper-bound validation before memcpy copies the data into a fixed-size account_info buffer.","status":"published","published":"2026-05-01T14:16:00Z","modified":"2026-10-17T13:00:05.133972476Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T16:56:18.393417Z"}]}}