{"id":"CVE-2026-108105","title":"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","summary":"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 fr…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-617"],"published":"2026-10-09","updated":"2026-10-09","sourceUpdated":"2026-10-09T18:17:06.590","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-108105","references":[{"url":"https://github.com/open5gs/open5gs","label":"disclosure@vulncheck.com"},{"url":"https://github.com/open5gs/open5gs/blob/v2.8.0/src/mme/mme-gn-handler.c#L208-L217","label":"disclosure@vulncheck.com"},{"url":"https://github.com/open5gs/open5gs/commit/346ce7a5e5cf2812bac3af042b5afba35bcf4f89","label":"disclosure@vulncheck.com"},{"url":"https://github.com/open5gs/open5gs/security/advisories/GHSA-9crh-64c8-56q6","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/open5gs-through-2.8.0-mme-reachable-assertion-via-gtpv1-sgsn-context-request","label":"disclosure@vulncheck.com"},{"url":"https://github.com/open5gs/open5gs/security/advisories/GHSA-9crh-64c8-56q6","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"ingestedAt":"2026-10-09T16:02:33.383Z","slug":"CVE-2026-108105","body":"## Overview\n\nOpen5GS 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":32,"depthScoreParts":{"impact":32.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}