{"id":"CVE-2026-108105","revision":"9bed174308664799a7578e188dfb042c","records":[{"revision":"9bed174308664799a7578e188dfb042c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-108105","aliases":[],"title":"Open5GS through 2.8.0 MME Reachable Assertion via GTPv1 SGSN Context Request","description":"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.","state":0,"publishedAt":"2026-10-09T14:08:16.163+00:00","modifiedAt":"2026-10-09T17:29:06.467+00:00","affected":[{"ecosystem":"Vendor product","name":"open5gs","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"open5gs\",\n                    \"product\": \"open5gs\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"2.8.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/open5gs/open5gs\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.2,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9,"severity":"MEDIUM"}],"references":["https://github.com/open5gs/open5gs/commit/346ce7a5e5cf2812bac3af042b5afba35bcf4f89","https://github.com/open5gs/open5gs","https://github.com/open5gs/open5gs/security/advisories/GHSA-9crh-64c8-56q6","https://github.com/open5gs/open5gs/blob/v2.8.0/src/mme/mme-gn-handler.c#L208-L217","https://www.vulncheck.com/advisories/open5gs-through-2.8.0-mme-reachable-assertion-via-gtpv1-sgsn-context-request"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-108105","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-108105","identifiers":["CVE-2026-108105"]},"retained":false,"historicalAffected":[]}],"coverage":[]}