{"cve":"CVE-2018-18508","nvd":{"published":"2020-10-22T21:15:12.467","modified":"2026-06-17T01:47:25.833","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-476"],"references":["https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf","https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.36.7_release_notes","https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.41.1_release_notes","https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04","https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf"],"products":["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"],"source":"nvd","synced_at":"2026-10-19T21:09:53.489947993+00:00"},"epss":{"cve":"CVE-2018-18508","score":0.01971,"percentile":0.80418,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}