{"id":"CVE-2023-40709","aliases":["EUVD-2023-45264","GHSA-8frv-2qrv-c3x2"],"status":"published","title":"Uncontrolled Resource Consumption in OPTO 22 SNAP PAC S1 Built-In Web Server","description":"An adversary could crash the entire device by sending a large quantity of ICMP requests if the controller has the built-in web server enabled but does not have the built-in web server completely set up and configured for the SNAP PAC S1 Firmware version R10.3b","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00551,"percentile":0.46354,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400","CWE-770"],"published":"2023-08-24T16:08:47Z","modified":"2026-06-17T06:19:10Z","products":[{"vendor":"opto 22","product":"snap pac s1"},{"vendor":"opto22","product":"snap_pac_s1_firmware"}],"references":[{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-23-236-02","tags":["x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-40709"},{"url":"https://github.com/advisories/GHSA-8frv-2qrv-c3x2"}],"sources":{"cve":[{"id":"CVE-2023-40709","title":"Uncontrolled Resource Consumption in OPTO 22 SNAP PAC S1 Built-In Web Server","description":"An adversary could crash the entire device by sending a large quantity of ICMP requests if the controller has the built-in web server enabled but does not have the built-in web server completely set up and configured for the SNAP PAC S1 Firmware version R10.3b","status":"published","published":"2023-08-24T16:08:47.919Z","modified":"2024-09-13T16:16:40.33Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-770"],"updated_at":"2026-11-02T14:35:21.971258Z"}],"euvd":[{"id":"EUVD-2023-45264","description":"An adversary could crash the entire device by sending a large quantity of ICMP requests if the controller has the built-in web server enabled but does not have the built-in web server completely set up and configured for the SNAP PAC S1 Firmware version R10.3b","status":"published","published":"2023-08-24T16:08:47Z","modified":"2024-09-13T16:16:40Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T00:55:55.467153Z"}],"ghsa":[{"id":"GHSA-8frv-2qrv-c3x2","title":"An adversary could crash the entire device by sending a large quantity of ICMP requests if the...","description":"An adversary could crash the entire device by sending a large quantity of ICMP requests if the controller has the built-in web server enabled but does not have the built-in web server completely set up and configured for the SNAP PAC S1 Firmware version R10.3b","status":"published","published":"2023-08-24T18:30:51Z","modified":"2024-09-11T18:30:59Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-400","CWE-770"],"updated_at":"2026-11-02T14:58:14.100374Z"}],"nvd":[{"id":"CVE-2023-40709","description":"An adversary could crash the entire device by sending a large quantity of ICMP requests if the controller has the built-in web server enabled but does not have the built-in web server completely set up and configured for the SNAP PAC S1 Firmware version R10.3b","status":"published","published":"2023-08-24T17:15:09.16Z","modified":"2026-06-17T06:19:10.883Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","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-770","CWE-400"],"updated_at":"2026-11-02T14:08:25.025396Z"}]}}