{"id":"CVE-2026-1973","state":"PUBLISHED","title":"Free5GC SMF establishPfcpSession null pointer dereference","description":"A vulnerability was determined in Free5GC up to 4.1.0. The impacted element is the function establishPfcpSession of the component SMF. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. It is best practice to apply a patch to resolve this issue.","publishedAt":"2026-02-06T01:32:08.923Z","updatedAt":"2026-02-23T09:19:46.366Z","severity":{"score":6.9,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["n/a Free5GC"],"affected":[{"vendor":"n/a","product":"Free5GC","versions":[{"version":"4.0","status":"affected"},{"version":"4.1.0","status":"affected"}],"cpes":["cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*"],"modules":["SMF"]}],"references":["https://vuldb.com/?id.344495","https://vuldb.com/?ctiid.344495","https://vuldb.com/?submit.743236","https://github.com/free5gc/free5gc/issues/815","https://github.com/free5gc/free5gc/issues/815#issue-3832032062","https://github.com/free5gc/smf/pull/189","https://github.com/free5gc/free5gc/"],"weaknesses":["CWE-476","CWE-404"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/1xxx/CVE-2026-1973.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-1973","state":"PUBLISHED","datePublished":"2026-02-06T01:32:08.923Z","dateUpdated":"2026-02-23T09:19:46.366Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-02-05T13:33:39.834Z"},"containers":{"cna":{"title":"Free5GC SMF establishPfcpSession null pointer dereference","descriptions":[{"lang":"en","value":"A vulnerability was determined in Free5GC up to 4.1.0. The impacted element is the function establishPfcpSession of the component SMF. Executing a manipulation can lead to null pointer dereference. The attack may be launched remotely. The exploit has been publicly disclosed and may be utilized. It is best practice to apply a patch to resolve this issue."}],"affected":[{"vendor":"n/a","product":"Free5GC","versions":[{"version":"4.0","status":"affected"},{"version":"4.1.0","status":"affected"}],"cpes":["cpe:2.3:a:free5gc:free5gc:*:*:*:*:*:*:*:*"],"modules":["SMF"]}],"references":[{"url":"https://vuldb.com/?id.344495","name":"VDB-344495 | Free5GC SMF establishPfcpSession null pointer dereference","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.344495","name":"VDB-344495 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.743236","name":"Submit #743236 | free5gc SMF v4.1.0 Denial of Service","tags":["third-party-advisory"]},{"url":"https://github.com/free5gc/free5gc/issues/815","tags":["issue-tracking"]},{"url":"https://github.com/free5gc/free5gc/issues/815#issue-3832032062","tags":["exploit","issue-tracking"]},{"url":"https://github.com/free5gc/smf/pull/189","tags":["issue-tracking","patch"]},{"url":"https://github.com/free5gc/free5gc/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":6.9,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":5.3,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":5.3,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":5,"vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P/E:POC/RL:OF/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-476","type":"CWE","lang":"en","description":"NULL Pointer Dereference"}]},{"descriptions":[{"cweId":"CWE-404","type":"CWE","lang":"en","description":"Denial of Service"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-02-23T09:19:46.366Z"},"timeline":[{"time":"2026-02-05T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-02-05T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-02-09T17:03:04.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"ZiyuLin (VulDB User)","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-06T19:31:53.954682Z","id":"CVE-2026-1973","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-02-06T19:32:02.166Z"}}]}}}