{"id":"CVE-2026-79298","title":"An issue in Howyar Technologies Inc SysReturn Versions prior to 11.3.034 and fixed in v.11.3.0.34 allows a local attcker to execute arbitrary code via the BOOTia32.efi and a crafted cloak32.dat file on the ESP.","summary":"An issue in Howyar Technologies Inc SysReturn Versions prior to 11.3.034 and fixed in v.11.3.0.34 allows a local attcker to execute arbitrary code via the BOOTia32.efi and a crafted cloak32.dat file on the ESP.","severity":"high","cvss":8.4,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-693"],"published":"2026-09-16","updated":"2026-09-17","sourceUpdated":"2026-09-17T16:17:44.000","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-79298","references":[{"url":"https://github.com/TheMalwareGuardian/CVE-2026-79298","label":"cve@mitre.org"},{"url":"https://github.com/TheMalwareGuardian/UEFI-Security-Research-Howyar-SysReturn-NetCopy","label":"cve@mitre.org"},{"url":"https://github.com/TheMalwareGuardian/UEFI-Security-Research-Howyar-SysReturn-NetCopy","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-17T15:11:18.342765Z"},"exploits":{"github":2,"githubRepos":["https://github.com/TheMalwareGuardian/UEFI-Security-Research-Howyar-SysReturn-NetCopy","https://github.com/TheMalwareGuardian/CVE-2026-79298"],"checkedAt":"2026-09-21T15:30:45.425Z"},"ingestedAt":"2026-09-16T19:02:30.722Z","epss":0.00193,"epssPercentile":0.09248,"slug":"CVE-2026-79298","body":"## Overview\n\nAn issue in Howyar Technologies Inc SysReturn Versions prior to 11.3.034 and fixed in v.11.3.0.34 allows a local attcker to execute arbitrary code via the BOOTia32.efi and a crafted cloak32.dat file on the ESP.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":58,"depthScoreParts":{"impact":46.2,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":206258,"id":"CVE-2026-79298","ts":1789662162536,"field":"cvss","old":null,"new":"8.4"},{"seq":206257,"id":"CVE-2026-79298","ts":1789662162536,"field":"severity","old":"none","new":"high"}]}