{"id":"CVE-2023-40709","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-40709","generatedAt":"2026-10-28T02:16:30.822Z","title":"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…","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","published":"2023-08-24T17:15:09.000Z","lastModified":"2026-06-17T06:19:11.000Z","status":"Modified","sourceIdentifier":"ot-cert@dragos.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-770","CWE-400"],"affected":["opto22/snap pac s1 firmware"],"epss":{"score":0.00551,"percentile":0.45817,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.55%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-23-236-02","tags":["Third Party Advisory","US Government Resource"],"source":"ot-cert@dragos.com"},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-23-236-02","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-40709","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}