{"id":"CVE-2021-34947","state":"PUBLISHED","title":"NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability","description":"NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 routers. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the parsing of the soap_block_table file. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of root.\n. Was ZDI-CAN-13055.","publishedAt":"2024-05-07T22:54:22.897Z","updatedAt":"2024-08-04T00:26:55.741Z","severity":{"score":8.8,"label":"High","version":"3.0","vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"zdi"},"assigner":"zdi","products":["NETGEAR R7800"],"affected":[{"vendor":"NETGEAR","product":"R7800","defaultStatus":"unknown","versions":[{"version":"1.0.2.82","status":"affected"}]}],"references":["https://www.zerodayinitiative.com/advisories/ZDI-21-1116/","https://kb.netgear.com/000064044/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-PSV-2021-0129"],"weaknesses":["CWE-787"],"ingestedAt":"2026-10-29T19:48:38.863Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/34xxx/CVE-2021-34947.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-34947","state":"PUBLISHED","datePublished":"2024-05-07T22:54:22.897Z","dateUpdated":"2024-08-04T00:26:55.741Z","assignerShortName":"zdi","assignerOrgId":"99f1926a-a320-47d8-bbb5-42feb611262e","dateReserved":"2021-06-17T19:27:05.647Z"},"containers":{"cna":{"title":"NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability","descriptions":[{"lang":"en","value":"NETGEAR R7800 net-cgi Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R7800 routers. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the parsing of the soap_block_table file. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of root.\n. Was ZDI-CAN-13055."}],"affected":[{"vendor":"NETGEAR","product":"R7800","defaultStatus":"unknown","versions":[{"version":"1.0.2.82","status":"affected"}]}],"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1116/","name":"ZDI-21-1116","tags":["x_research-advisory"]},{"url":"https://kb.netgear.com/000064044/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-PSV-2021-0129","name":"vendor-provided URL","tags":["vendor-advisory"]}],"metrics":[{"format":"CVSS","cvssV3_0":{"version":"3.0","vectorString":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-787","lang":"en","description":"CWE-787: Out-of-bounds Write","type":"CWE"}]}],"providerMetadata":{"shortName":"zdi","orgId":"99f1926a-a320-47d8-bbb5-42feb611262e","dateUpdated":"2024-05-07T22:54:22.897Z"},"dateAssigned":"2021-06-30T13:56:51.627Z","datePublic":"2021-09-28T08:46:45.280Z","source":{"lang":"en","value":"Hoang Thach Nguyen of STAR Labs"}},"adp":[{"title":"CISA ADP Vulnrichment","affected":[{"vendor":"netgear","product":"r7800","defaultStatus":"unknown","versions":[{"version":"1.0.2.82","status":"affected"}],"cpes":["cpe:2.3:h:netgear:r7800:-:*:*:*:*:*:*:*"]}],"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2021-34947","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2024-05-08T14:59:27.888131Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-06-04T17:12:43.289Z"}},{"title":"CVE Program Container","references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1116/","name":"ZDI-21-1116","tags":["x_research-advisory","x_transferred"]},{"url":"https://kb.netgear.com/000064044/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-PSV-2021-0129","name":"vendor-provided URL","tags":["vendor-advisory","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T00:26:55.741Z"}}]}}}