{"id":"CVE-2026-8764","state":"PUBLISHED","title":"H3C Magic B3 aspForm UpdateWanParams buffer overflow","description":"A security vulnerability has been detected in H3C Magic B3 up to 100R002. This affects the function UpdateWanParams of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.","publishedAt":"2026-05-17T21:30:11.744Z","updatedAt":"2026-05-18T19:55:52.152Z","severity":{"score":8.6,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["H3C Magic B3"],"affected":[{"vendor":"H3C","product":"Magic B3","versions":[{"version":"100R002","status":"affected"}],"cpes":["cpe:2.3:a:h3c:magic_b3:*:*:*:*:*:*:*:*"]}],"references":["https://vuldb.com/vuln/364389","https://vuldb.com/vuln/364389/cti","https://vuldb.com/submit/811373","https://github.com/yyyy0031/CVE/issues/1"],"weaknesses":["CWE-120","CWE-119"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/8xxx/CVE-2026-8764.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-8764","state":"PUBLISHED","datePublished":"2026-05-17T21:30:11.744Z","dateUpdated":"2026-05-18T19:55:52.152Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-05-17T08:51:53.738Z"},"containers":{"cna":{"title":"H3C Magic B3 aspForm UpdateWanParams buffer overflow","descriptions":[{"lang":"en","value":"A security vulnerability has been detected in H3C Magic B3 up to 100R002. This affects the function UpdateWanParams of the file /goform/aspForm. Such manipulation of the argument param leads to buffer overflow. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way."}],"affected":[{"vendor":"H3C","product":"Magic B3","versions":[{"version":"100R002","status":"affected"}],"cpes":["cpe:2.3:a:h3c:magic_b3:*:*:*:*:*:*:*:*"]}],"references":[{"url":"https://vuldb.com/vuln/364389","name":"VDB-364389 | H3C Magic B3 aspForm UpdateWanParams buffer overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/364389/cti","name":"VDB-364389 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/submit/811373","name":"Submit #811373 | New H3C Technologies Co., Ltd. H3C Magic B3 <= 100R002 Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://github.com/yyyy0031/CVE/issues/1","tags":["exploit","issue-tracking"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":8.6,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","baseSeverity":"HIGH"}},{"cvssV3_1":{"version":"3.1","baseScore":7.2,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R","baseSeverity":"HIGH"}},{"cvssV3_0":{"version":"3.0","baseScore":7.2,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R","baseSeverity":"HIGH"}},{"cvssV2_0":{"version":"2.0","baseScore":8.3,"vectorString":"AV:N/AC:L/Au:M/C:C/I:C/A:C/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-120","type":"CWE","lang":"en","description":"Buffer Overflow"}]},{"descriptions":[{"cweId":"CWE-119","type":"CWE","lang":"en","description":"Memory Corruption"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-05-17T21:30:11.744Z"},"timeline":[{"time":"2026-05-17T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-05-17T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-05-17T10:56:57.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"yyy0032 (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-18T19:55:28.710400Z","id":"CVE-2026-8764","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-18T19:55:52.152Z"}}]}}}