{"id":"CVE-2018-18508","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-18508","generatedAt":"2026-10-29T00:48:09.055Z","title":"In Network Security Services (NSS) before 3.36.7 and before 3.41.1, a malformed signature can cause a crash due to a null dereference, resulting in a Denial of Service.","description":"In Network Security Services (NSS) before 3.36.7 and before 3.41.1, a malformed signature can cause a crash due to a null dereference, resulting in a Denial of Service.","published":"2020-10-22T21:15:12.000Z","lastModified":"2026-06-17T01:47:26.000Z","status":"Modified","sourceIdentifier":"security@mozilla.org","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"cwe":["CWE-476"],"affected":["mozilla/network security services","siemens/ruggedcom rox mx5000 firmware","siemens/ruggedcom rox rx1400 firmware","siemens/ruggedcom rox rx1500 firmware","siemens/ruggedcom rox rx1501 firmware","siemens/ruggedcom rox rx1510 firmware","siemens/ruggedcom rox rx1511 firmware","siemens/ruggedcom rox rx1512 firmware","siemens/ruggedcom rox rx5000 firmware"],"epss":{"score":0.01971,"percentile":0.80314,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.97%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf","tags":["Third Party Advisory"],"source":"security@mozilla.org"},{"url":"https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.36.7_release_notes","tags":["Release Notes","Vendor Advisory"],"source":"security@mozilla.org"},{"url":"https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.41.1_release_notes","tags":["Release Notes","Vendor Advisory"],"source":"security@mozilla.org"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04","tags":["Third Party Advisory","US Government Resource"],"source":"security@mozilla.org"},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.36.7_release_notes","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.41.1_release_notes","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-18508","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."}