{"id":"CVE-2021-25849","aliases":["EUVD-2021-12730","GHSA-vwhr-cxjh-7vpw"],"status":"published","title":"An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series,...","description":"An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, improper validation of the PortID TLV leads to Denial of Service via a crafted lldp packet.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01051,"percentile":0.64579,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-191"],"published":"2021-05-10T10:52:33Z","modified":"2026-06-17T03:42:31Z","products":[{"vendor":"moxa","product":"vport_06ec-2v26m_firmware"},{"vendor":"moxa","product":"vport_06ec-2v36m-ct-t_firmware"},{"vendor":"moxa","product":"vport_06ec-2v36m-ct_firmware"},{"vendor":"moxa","product":"vport_06ec-2v36m-t_firmware"},{"vendor":"moxa","product":"vport_06ec-2v42m-ct-t_firmware"},{"vendor":"moxa","product":"vport_06ec-2v42m-ct_firmware"},{"vendor":"moxa","product":"vport_06ec-2v42m-t_firmware"},{"vendor":"moxa","product":"vport_06ec-2v42m_firmware"},{"vendor":"moxa","product":"vport_06ec-2v60m-ct-t_firmware"},{"vendor":"moxa","product":"vport_06ec-2v60m-ct_firmware"},{"vendor":"moxa","product":"vport_06ec-2v60m-t_firmware"},{"vendor":"moxa","product":"vport_06ec-2v60m_firmware"},{"vendor":"moxa","product":"vport_06ec-2v80m-ct-t_firmware"},{"vendor":"moxa","product":"vport_06ec-2v80m-ct_firmware"},{"vendor":"moxa","product":"vport_06ec-2v80m-t_firmware"},{"vendor":"moxa","product":"vport_06ec-2v80m_firmware"}],"references":[{"url":"https://www.moxa.com/en/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.moxa.com/en/support/product-support/security-advisory/vport-06ec-2v-series-ip-cameras-vulnerabilities","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-25849"},{"url":"https://github.com/advisories/GHSA-vwhr-cxjh-7vpw"}],"sources":{"cve":[{"id":"CVE-2021-25849","description":"An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, improper validation of the PortID TLV leads to Denial of Service via a crafted lldp packet.","status":"published","published":"2021-05-10T10:52:33Z","modified":"2024-08-03T20:11:28.476Z","updated_at":"2026-11-02T14:32:59.802172Z"}],"euvd":[{"id":"EUVD-2021-12730","description":"An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, improper validation of the PortID TLV leads to Denial of Service via a crafted lldp packet.","status":"published","published":"2021-05-10T10:52:33Z","modified":"2024-08-03T20:11:28Z","updated_at":"2026-11-03T03:24:52.420769Z"}],"ghsa":[{"id":"GHSA-vwhr-cxjh-7vpw","title":"An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series,...","description":"An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, improper validation of the PortID TLV leads to Denial of Service via a crafted lldp packet.","status":"published","published":"2022-05-24T19:01:56Z","modified":"2023-01-29T05:06:39Z","cwes":["CWE-191"],"updated_at":"2026-11-02T14:46:04.414181Z"}],"nvd":[{"id":"CVE-2021-25849","description":"An integer underflow was discovered in userdisk/vport_lldpd in Moxa Camera VPort 06EC-2V Series, version 1.1, improper validation of the PortID TLV leads to Denial of Service via a crafted lldp packet.","status":"published","published":"2021-05-10T11:15:07.967Z","modified":"2026-06-17T03:42:31.053Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-191"],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}