{"id":"CVE-2026-7546","state":"PUBLISHED","title":"Totolink NR1800X lighttpd find_host_ip stack-based overflow","description":"A security vulnerability has been detected in Totolink NR1800X 9.1.0u.6279_B20210910. The impacted element is the function find_host_ip of the component lighttpd. Such manipulation of the argument Host leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used.","publishedAt":"2026-05-01T02:15:12.350Z","updatedAt":"2026-05-01T21:28:56.710Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","source":"VulDB"},"assigner":"VulDB","products":["Totolink NR1800X"],"affected":[{"vendor":"Totolink","product":"NR1800X","versions":[{"version":"9.1.0u.6279_B20210910","status":"affected"}],"cpes":["cpe:2.3:o:totolink:nr1800x_firmware:*:*:*:*:*:*:*:*"],"modules":["lighttpd"]}],"references":["https://vuldb.com/vuln/360357","https://vuldb.com/vuln/360357/cti","https://vuldb.com/submit/804404","https://github.com/newym/cve/blob/main/totolinknr1800x.md","https://www.totolink.net/"],"weaknesses":["CWE-121","CWE-119"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/7xxx/CVE-2026-7546.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-7546","state":"PUBLISHED","datePublished":"2026-05-01T02:15:12.350Z","dateUpdated":"2026-05-01T21:28:56.710Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-04-30T18:56:41.852Z"},"containers":{"cna":{"title":"Totolink NR1800X lighttpd find_host_ip stack-based overflow","descriptions":[{"lang":"en","value":"A security vulnerability has been detected in Totolink NR1800X 9.1.0u.6279_B20210910. The impacted element is the function find_host_ip of the component lighttpd. Such manipulation of the argument Host leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used."}],"affected":[{"vendor":"Totolink","product":"NR1800X","versions":[{"version":"9.1.0u.6279_B20210910","status":"affected"}],"cpes":["cpe:2.3:o:totolink:nr1800x_firmware:*:*:*:*:*:*:*:*"],"modules":["lighttpd"]}],"references":[{"url":"https://vuldb.com/vuln/360357","name":"VDB-360357 | Totolink NR1800X lighttpd find_host_ip stack-based overflow","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/360357/cti","name":"VDB-360357 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/submit/804404","name":"Submit #804404 | Totolink C834FR-1C NR1800X 内存损坏","tags":["third-party-advisory"]},{"url":"https://github.com/newym/cve/blob/main/totolinknr1800x.md","tags":["exploit"]},{"url":"https://www.totolink.net/","tags":["product"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":9.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P","baseSeverity":"CRITICAL"}},{"cvssV3_1":{"version":"3.1","baseScore":9.8,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:R","baseSeverity":"CRITICAL"}},{"cvssV3_0":{"version":"3.0","baseScore":9.8,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:W/RC:R","baseSeverity":"CRITICAL"}},{"cvssV2_0":{"version":"2.0","baseScore":10,"vectorString":"AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:W/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","type":"CWE","lang":"en","description":"Stack-based Buffer Overflow"}]},{"descriptions":[{"cweId":"CWE-119","type":"CWE","lang":"en","description":"Memory Corruption"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-05-01T02:15:12.350Z"},"timeline":[{"time":"2026-04-30T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-04-30T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-04-30T21:01:47.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"NEWYM (VulDB User)","type":"reporter"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-01T21:28:47.223870Z","id":"CVE-2026-7546","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-01T21:28:56.710Z"}}]}}}