{"id":"CVE-2021-33728","aliases":["EUVD-2021-20405","GHSA-6ccq-w7mc-g74j"],"status":"published","title":"A vulnerability has been identified in SINEC NMS (All versions \u003c V1.0 SP2 Update 1). The affected...","description":"A vulnerability has been identified in SINEC NMS (All versions \u003c V1.0 SP2 Update 1). The affected system allows to upload JSON objects that are deserialized to JAVA objects. Due to insecure deserialization of user-supplied content by the affected software, a privileged attacker could exploit this vulnerability by sending a crafted serialized Java object. An exploit could allow the attacker to execute arbitrary code on the device with root privileges.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01551,"percentile":0.75283,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2021-10-12T09:49:28Z","modified":"2026-06-17T03:55:07Z","products":[{"vendor":"siemens","product":"sinec nms"},{"vendor":"siemens","product":"sinec_nms"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-163251.pdf","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33728"},{"url":"https://github.com/advisories/GHSA-6ccq-w7mc-g74j"}],"sources":{"cve":[{"id":"CVE-2021-33728","description":"A vulnerability has been identified in SINEC NMS (All versions \u003c V1.0 SP2 Update 1). The affected system allows to upload JSON objects that are deserialized to JAVA objects. Due to insecure deserialization of user-supplied content by the affected software, a privileged attacker could exploit this vulnerability by sending a crafted serialized Java object. An exploit could allow the attacker to execute arbitrary code on the device with root privileges.","status":"published","published":"2021-10-12T09:49:28Z","modified":"2024-08-03T23:58:22.903Z","cwes":["CWE-502"],"updated_at":"2026-11-02T14:33:10.555814Z"}],"euvd":[{"id":"EUVD-2021-20405","description":"A vulnerability has been identified in SINEC NMS (All versions \u003c V1.0 SP2 Update 1). The affected system allows to upload JSON objects that are deserialized to JAVA objects. Due to insecure deserialization of user-supplied content by the affected software, a privileged attacker could exploit this vulnerability by sending a crafted serialized Java object. An exploit could allow the attacker to execute arbitrary code on the device with root privileges.","status":"published","published":"2021-10-12T09:49:28Z","modified":"2024-08-03T23:58:22Z","updated_at":"2026-11-03T03:24:33.318275Z"}],"ghsa":[{"id":"GHSA-6ccq-w7mc-g74j","title":"A vulnerability has been identified in SINEC NMS (All versions \u003c V1.0 SP2 Update 1). The affected...","description":"A vulnerability has been identified in SINEC NMS (All versions \u003c V1.0 SP2 Update 1). The affected system allows to upload JSON objects that are deserialized to JAVA objects. Due to insecure deserialization of user-supplied content by the affected software, a privileged attacker could exploit this vulnerability by sending a crafted serialized Java object. An exploit could allow the attacker to execute arbitrary code on the device with root privileges.","status":"published","published":"2022-05-24T19:17:22Z","modified":"2023-01-30T05:02:47Z","cwes":["CWE-502"],"updated_at":"2026-11-02T14:46:43.162136Z"}],"nvd":[{"id":"CVE-2021-33728","description":"A vulnerability has been identified in SINEC NMS (All versions \u003c V1.0 SP2 Update 1). The affected system allows to upload JSON objects that are deserialized to JAVA objects. Due to insecure deserialization of user-supplied content by the affected software, a privileged attacker could exploit this vulnerability by sending a crafted serialized Java object. An exploit could allow the attacker to execute arbitrary code on the device with root privileges.","status":"published","published":"2021-10-12T10:15:12.01Z","modified":"2026-06-17T03:55:07.107Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":9,"vector":"AV:N/AC:L/Au:S/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:06:59.689345Z"}]}}