{"schema":"threatline.record/2","record":{"id":"CVE-2026-108105","aliases":["GHSA-9crh-64c8-56q6"],"summary":"Open5GS through 2.8.0 MME Reachable Assertion via GTPv1 SGSN Context Request","details":"Open5GS through 2.8.0 contains a reachable assertion vulnerability in mme_gn_handle_sgsn_context_request() that allows remote unauthenticated attackers to crash the MME via malformed SGSN Address IEs. Attackers sending GTPv1-C traffic from a configured SGSN address with a known UE IMSI or P-TMSI can supply an invalid address length to terminate open5gs-mmed, denying service to all subscribers.","categories":["Unclassified"],"product":"open5gs","vendor":"open5gs","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-108105","source_modified_at":"2026-10-09T17:29:06.467Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"open5gs","vendor":"open5gs","versions":[{"version":"0","lessThanOrEqual":"2.8.0","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":8.2,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00523,"percentile":0.43549,"score_date":"2026-10-23"},"published_at":"2026-10-09T14:08:16.163Z","modified_at":"2026-10-09T17:29:06.467Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-108105","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-09T17:29:06.467Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-108105","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/open5gs/open5gs/commit/346ce7a5e5cf2812bac3af042b5afba35bcf4f89","tags":["patch"]},{"source":"CVE List","url":"https://github.com/open5gs/open5gs","tags":["product"]},{"source":"CVE List","url":"https://github.com/open5gs/open5gs/security/advisories/GHSA-9crh-64c8-56q6","tags":["exploit"]},{"source":"CVE List","url":"https://github.com/open5gs/open5gs/blob/v2.8.0/src/mme/mme-gn-handler.c#L208-L217","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/open5gs-through-2.8.0-mme-reachable-assertion-via-gtpv1-sgsn-context-request","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"poc","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-09T17:28:31.660544Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-09T17:29:06.467Z","content_hash":"bd4092ac6a5495d08a4984771caf5ba611cfbf32f264f302305233081a7eff7e"}}