{"id":"CVE-2026-4988","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-4988","generatedAt":"2026-10-28T01:13:50.354Z","title":"The manipulation results in denial of service.","description":"A security flaw has been discovered in Open5GS 2.7.6. This issue affects the function smf_gx_cca_cb/smf_gy_cca_cb/smf_s6b of the component CCA Message Handler. The manipulation results in denial of service. The attack may be launched remotely. Attacks of this nature are highly complex. The exploitability is assessed as difficult. The exploit has been released to the public and may be used for attacks.","published":"2026-03-27T22:16:24.000Z","lastModified":"2026-06-17T10:57:33.000Z","status":"Analyzed","sourceIdentifier":"cna@vuldb.com","cvss":{"version":"4.0","score":2.9,"severity":"LOW","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-404"],"affected":["open5gs/open5gs"],"epss":{"score":0.00576,"percentile":0.47259,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.58%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/open5gs/open5gs/","tags":["Product"],"source":"cna@vuldb.com"},{"url":"https://github.com/open5gs/open5gs/issues/4342","tags":["Exploit","Issue Tracking"],"source":"cna@vuldb.com"},{"url":"https://github.com/open5gs/open5gs/issues/4342#issue-4021772232","tags":["Issue Tracking"],"source":"cna@vuldb.com"},{"url":"https://vuldb.com/?ctiid.353875","tags":["Permissions Required","VDB Entry"],"source":"cna@vuldb.com"},{"url":"https://vuldb.com/?id.353875","tags":["Third Party Advisory","VDB Entry"],"source":"cna@vuldb.com"},{"url":"https://vuldb.com/?submit.771349","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"cna@vuldb.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-4988","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}