{"id":"CVE-2026-110958","state":"PUBLISHED","title":"Wavlink WN530HG4B api.cgi heap-based overflow","description":"A vulnerability was found in Wavlink WN530HG4B M30HG4B_V260724. The impacted element is an unknown function of the file api.cgi. The manipulation results in heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version 2026-09-24-841a51c6d5_tclinux.bin is sufficient to resolve this issue. The affected component should be upgraded. The vendor confirms: \"We confirm the finding, and it has already been addressed. In the current firmware the api=info&client=app handler no longer builds a shell command: the login script is now invoked through an argument vector (execvp) instead of system(), and the client address is length-limited and null-checked.\"","publishedAt":"2026-10-15T15:30:18.031Z","updatedAt":"2026-10-15T18:34:20.350Z","severity":{"score":10,"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:H/SI:H/SA:H/E:P","source":"VulDB"},"assigner":"VulDB","products":["Wavlink WN530HG4B"],"affected":[{"vendor":"Wavlink","product":"WN530HG4B","versions":[{"version":"M30HG4B_V260724","status":"affected"},{"version":"2026-09-24-841a51c6d5_tclinux.bin","status":"unaffected"}],"cpes":["cpe:2.3:a:wavlink:wn530hg4b:*:*:*:*:*:*:*:*"]}],"references":["https://vuldb.com/vuln/420571","https://vuldb.com/vuln/420571/cti","https://vuldb.com/cve/CVE-2026-110958","https://vuldb.com/submit/933388","https://drive.google.com/file/d/12OOh8g9YDCbD-Q4cc52J6TH9KuOoD44A/view?usp=drive_link","https://dl.wavlink.com/firmware/RD/WN530BE2_WAVLINK-WO-2026-09-24-841a51c6d5_tclinux.bin"],"weaknesses":["CWE-122","CWE-119"],"ingestedAt":"2026-10-29T20:10:33.477Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/110xxx/CVE-2026-110958.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-110958","state":"PUBLISHED","datePublished":"2026-10-15T15:30:18.031Z","dateUpdated":"2026-10-15T18:34:20.350Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-10-15T09:30:59.165Z"},"containers":{"cna":{"title":"Wavlink WN530HG4B api.cgi heap-based overflow","descriptions":[{"lang":"en","value":"A vulnerability was found in Wavlink WN530HG4B M30HG4B_V260724. The impacted element is an unknown function of the file api.cgi. The manipulation results in heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and could be used. Upgrading to version 2026-09-24-841a51c6d5_tclinux.bin is sufficient to resolve this issue. The affected component should be upgraded. The vendor confirms: \"We confirm the finding, and it has already been addressed. In the current firmware the api=info&client=app handler no longer builds a shell command: the login script is now invoked through an argument vector (execvp) instead of system(), and the client address is length-limited and null-checked.\""}],"affected":[{"vendor":"Wavlink","product":"WN530HG4B","versions":[{"version":"M30HG4B_V260724","status":"affected"},{"version":"2026-09-24-841a51c6d5_tclinux.bin","status":"unaffected"}],"cpes":["cpe:2.3:a:wavlink:wn530hg4b:*:*:*:*:*:*:*:*"]}],"references":[{"url":"https://vuldb.com/vuln/420571","name":"VDB-420571 | Wavlink WN530HG4B api.cgi heap-based overflow","tags":["vdb-entry"]},{"url":"https://vuldb.com/vuln/420571/cti","name":"VDB-420571 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-110958","name":"CVE-2026-110958 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/933388","name":"Submit #933388 | Wavlink WN530HG4B M30HG4B_V260724 Heap-based Buffer Overflow","tags":["third-party-advisory"]},{"url":"https://drive.google.com/file/d/12OOh8g9YDCbD-Q4cc52J6TH9KuOoD44A/view?usp=drive_link","tags":["exploit"]},{"url":"https://dl.wavlink.com/firmware/RD/WN530BE2_WAVLINK-WO-2026-09-24-841a51c6d5_tclinux.bin","tags":["patch"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":10,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P","baseSeverity":"CRITICAL"}},{"cvssV3_1":{"version":"3.1","baseScore":10,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C","baseSeverity":"CRITICAL"}},{"cvssV3_0":{"version":"3.0","baseScore":10,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C","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:OF/RC:C"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","type":"CWE","lang":"en","description":"Heap-based Buffer Overflow"}]},{"descriptions":[{"cweId":"CWE-119","type":"CWE","lang":"en","description":"Memory Corruption"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-10-15T15:30:18.031Z"},"timeline":[{"time":"2026-10-15T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-10-15T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-10-15T11:36:12.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"aissac (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}],"x_generator":["VulDB PVTS v202610"]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-15T18:34:10.216285Z","id":"CVE-2026-110958","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":"2026-10-15T18:34:20.350Z"}}]}}}