{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2025-15539","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-01-18T07:33:03.737Z","datePublished":"2026-01-18T23:32:06.758Z","dateUpdated":"2026-02-23T08:42:45.508Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-02-23T08:42:45.508Z"},"title":"Open5GS sgwc s11-handler.c sgwc_s11_handle_downlink_data_notification_ack denial of service","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-404","lang":"en","description":"Denial of Service"}]}],"affected":[{"vendor":"n/a","product":"Open5GS","versions":[{"version":"2.7.0","status":"affected"},{"version":"2.7.1","status":"affected"},{"version":"2.7.2","status":"affected"},{"version":"2.7.3","status":"affected"},{"version":"2.7.4","status":"affected"},{"version":"2.7.5","status":"affected"},{"version":"2.7.6","status":"affected"}],"cpes":["cpe:2.3:a:open5gs:open5gs:*:*:*:*:*:*:*:*"],"modules":["sgwc"]}],"descriptions":[{"lang":"en","value":"A vulnerability was determined in Open5GS up to 2.7.6. Impacted is the function sgwc_s11_handle_downlink_data_notification_ack of the file src/sgwc/s11-handler.c of the component sgwc. This manipulation causes denial of service. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b4707272c1caf6a7d4dca905694ea55557a0545f. To fix this issue, it is recommended to deploy a patch. The issue report is flagged as already-fixed."}],"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"}}],"timeline":[{"time":"2026-01-18T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-01-18T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-02-11T01:52:19.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"FrankyLin (VulDB User)","type":"reporter"},{"lang":"en","value":"FrankyLin (VulDB User)","type":"analyst"}],"references":[{"url":"https://vuldb.com/?id.341732","name":"VDB-341732 | Open5GS sgwc s11-handler.c sgwc_s11_handle_downlink_data_notification_ack denial of service","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.341732","name":"VDB-341732 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.735339","name":"Submit #735339 | Open5GS SGWC v2.7.6 Denial of Service","tags":["third-party-advisory"]},{"url":"https://github.com/open5gs/open5gs/issues/4230","tags":["issue-tracking"]},{"url":"https://github.com/open5gs/open5gs/issues/4230#issue-3774173079","tags":["exploit","issue-tracking"]},{"url":"https://github.com/open5gs/open5gs/commit/b4707272c1caf6a7d4dca905694ea55557a0545f","tags":["patch"]},{"url":"https://github.com/open5gs/open5gs/","tags":["product"]}],"tags":["x_open-source"]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-20T16:37:44.946926Z","id":"CVE-2025-15539","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-01-20T16:37:51.696Z"}}]}}