{"id":"CVE-2026-48131","aliases":["EUVD-2026-31818","GHSA-4qg4-f998-wjmm"],"status":"published","title":"VPND IKE Fragment Reassembly - Heap Out-of-Bounds Write via Sequence Number Zero","description":"The VPN service may mishandle an unexpected IKE fragment value received on the IKE port 500/UDP during the early stage of a connection attempt. This can cause the service to terminate unexpectedly, resulting in denial of service (temporary disruption of VPN-related functionality).","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.02658,"percentile":0.85806,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-05-26T12:56:08Z","modified":"2026-07-24T11:10:00Z","products":[{"vendor":"checkpoint","product":"quantum security gateway"}],"references":[{"url":"https://support.checkpoint.com/results/sk/sk184981"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48131"},{"url":"https://github.com/advisories/GHSA-4qg4-f998-wjmm"}],"sources":{"cve":[{"id":"CVE-2026-48131","title":"VPND IKE Fragment Reassembly - Heap Out-of-Bounds Write via Sequence Number Zero","description":"The VPN service may mishandle an unexpected IKE fragment value received on the IKE port 500/UDP during the early stage of a connection attempt. This can cause the service to terminate unexpectedly, resulting in denial of service (temporary disruption of VPN-related functionality).","status":"published","published":"2026-05-26T12:56:08.817Z","modified":"2026-05-26T15:18:43.287Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T13:50:49.872037Z"}],"euvd":[{"id":"EUVD-2026-31818","description":"The VPN service may mishandle an unexpected IKE fragment value received on the IKE port 500/UDP during the early stage of a connection attempt. This can cause the service to terminate unexpectedly, resulting in denial of service (temporary disruption of VPN-related functionality).","status":"published","published":"2026-05-26T12:56:08Z","modified":"2026-05-26T15:18:43Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:21:06.903439Z"}],"ghsa":[{"id":"GHSA-4qg4-f998-wjmm","title":"The VPN service may mishandle an unexpected IKE fragment value received on the IKE port 500/UDP...","description":"The VPN service may mishandle an unexpected IKE fragment value received on the IKE port 500/UDP during the early stage of a connection attempt. This can cause the service to terminate unexpectedly, resulting in denial of service (temporary disruption of VPN-related functionality).","status":"published","published":"2026-05-26T15:32:10Z","modified":"2026-05-26T15:32:16Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:08:18.132911Z"}],"nvd":[{"id":"CVE-2026-48131","description":"The VPN service may mishandle an unexpected IKE fragment value received on the IKE port 500/UDP during the early stage of a connection attempt. This can cause the service to terminate unexpectedly, resulting in denial of service (temporary disruption of VPN-related functionality).","status":"published","published":"2026-05-26T14:16:38.407Z","modified":"2026-07-24T11:10:00.17Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:12:20.131508Z"}]}}