{"id":"CVE-2023-3036","aliases":["EUVD-2023-43728","GHSA-pwx6-gw47-96cp"],"status":"published","title":"Out of Bounds Slice index in cfnts leads to remote panic","description":"An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit  783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71  enabled a remote attacker to trigger a panic by sending an NTSAuthenticator packet with extension length longer than the packet contents.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.02237,"percentile":0.82947,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119","CWE-125"],"published":"2023-06-14T11:08:08Z","modified":"2026-10-28T02:30:31Z","products":[{"vendor":"cloudflare","product":"cfnts"}],"references":[{"url":"https://github.com/cloudflare/cfnts/security/advisories/GHSA-pwx6-gw47-96cp","tags":["x_transferred","Patch","Third Party Advisory","advisory"]},{"url":"https://github.com","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3036.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-3036","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-3036","title":"Out of Bounds Slice index in cfnts leads to remote panic","description":"An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit  783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71  enabled a remote attacker to trigger a panic by sending an NTSAuthenticator packet with extension length longer than the packet contents.\n","status":"published","published":"2023-06-14T11:08:08.969Z","modified":"2025-01-02T19:22:43.099Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-119","CWE-125"],"updated_at":"2026-11-02T14:35:24.360381Z"}],"euvd":[{"id":"EUVD-2023-43728","description":"An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit  783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71  enabled a remote attacker to trigger a panic by sending an NTSAuthenticator packet with extension length longer than the packet contents.\n","status":"published","published":"2023-06-14T11:08:08Z","modified":"2025-01-02T19:22:43Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:04:27.955488Z"}],"nvd":[{"id":"CVE-2023-3036","description":"An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit  783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71  enabled a remote attacker to trigger a panic by sending an NTSAuthenticator packet with extension length longer than the packet contents.\n","status":"published","published":"2023-06-14T12:15:09.647Z","modified":"2026-06-17T06:13:13.443Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-119","CWE-125"],"updated_at":"2026-11-02T14:08:06.335469Z"}],"osv":[{"id":"CVE-2023-3036","title":"Out of Bounds Slice index in cfnts leads to remote panic","description":"An unchecked read in NTP server in github.com/cloudflare/cfnts prior to commit  783490b https://github.com/cloudflare/cfnts/commit/783490b913f05e508a492cd7b02e3c4ec2297b71  enabled a remote attacker to trigger a panic by sending an NTSAuthenticator packet with extension length longer than the packet contents.\n","status":"published","published":"2023-06-14T11:08:08.969Z","modified":"2026-10-28T02:30:31.014310362Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-119","CWE-125"],"updated_at":"2026-11-02T15:44:31.790231Z"}]}}