{"id":"CVE-2023-5760","aliases":["EUVD-2023-58045","GHSA-c65v-cwf9-f69v"],"status":"published","title":"Time-of-check to time-of-use (TOCTOU) bug  leads to full local privilege escalation.","description":"A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests. This TOCTOU bug leads to an out-of-bounds write vulnerability which can be further exploited, allowing an attacker to gain full local privilege escalation on the system.This issue affects Avast/Avg Antivirus: 23.8.","severity":{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00217,"percentile":0.12295,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-367"],"published":"2023-11-08T16:36:29Z","modified":"2026-06-17T06:49:18Z","products":[{"vendor":"avast","product":"avg_antivirus"},{"vendor":"avast/avg","product":"avast/avg antivirus"}],"references":[{"url":"https://support.norton.com/sp/static/external/tools/security-advisories.html","tags":["x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-5760"},{"url":"https://github.com/advisories/GHSA-c65v-cwf9-f69v"}],"sources":{"cve":[{"id":"CVE-2023-5760","title":"Time-of-check to time-of-use (TOCTOU) bug  leads to full local privilege escalation.","description":"A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests. This TOCTOU bug leads to an out-of-bounds write vulnerability which can be further exploited, allowing an attacker to gain full local privilege escalation on the system.This issue affects Avast/Avg Antivirus: 23.8.\n\n","status":"published","published":"2023-11-08T16:36:29.217Z","modified":"2024-09-03T20:20:38.486Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:35:17.149492Z"}],"euvd":[{"id":"EUVD-2023-58045","description":"A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests. This TOCTOU bug leads to an out-of-bounds write vulnerability which can be further exploited, allowing an attacker to gain full local privilege escalation on the system.This issue affects Avast/Avg Antivirus: 23.8.\n\n","status":"published","published":"2023-11-08T16:36:29Z","modified":"2024-09-03T20:20:38Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T00:56:05.029422Z"}],"ghsa":[{"id":"GHSA-c65v-cwf9-f69v","title":"A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests....","description":"A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests. This TOCTOU bug leads to an out-of-bounds write vulnerability which can be further exploited, allowing an attacker to gain full local privilege escalation on the system.This issue affects Avast/Avg Antivirus: 23.8.\n\n","status":"published","published":"2023-11-08T18:30:31Z","modified":"2023-11-08T18:30:37Z","cvss":[{"version":"3.1","score":0,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","level":"none"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:54:55.524004Z"}],"nvd":[{"id":"CVE-2023-5760","description":"A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests. This TOCTOU bug leads to an out-of-bounds write vulnerability which can be further exploited, allowing an attacker to gain full local privilege escalation on the system.This issue affects Avast/Avg Antivirus: 23.8.\n\n","status":"published","published":"2023-11-08T17:15:07.993Z","modified":"2026-06-17T06:49:18.727Z","cvss":[{"version":"3.1","score":8.2,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-367"],"updated_at":"2026-11-02T14:08:43.669554Z"}]}}