{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-18588", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-08-02T20:33:29.434Z", "datePublished": "2026-08-03T06:00:11.107Z", "dateUpdated": "2026-08-03T06:00:11.107Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-08-03T06:00:11.107Z"}, "title": "Wavlink WL-NU516U1 nas.cgi fgets stack-based overflow", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-121", "lang": "en", "description": "Stack-based Buffer Overflow"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-119", "lang": "en", "description": "Memory Corruption"}]}], "affected": [{"vendor": "Wavlink", "product": "WL-NU516U1", "versions": [{"version": "708c073-mt7628", "status": "affected"}], "cpes": ["cpe:2.3:o:wavlink:wl-nu516u1_firmware:*:*:*:*:*:*:*:*"]}], "descriptions": [{"lang": "en", "value": "A vulnerability has been found in Wavlink WL-NU516U1 708c073-mt7628. This affects the function fgets of the file nas.cgi. The manipulation of the argument CONTENT_LENGTH leads to stack-based buffer overflow. Remote exploitation of the attack is possible. You should upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected 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:X", "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:X/RL:O/RC:C", "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:X/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:ND/RL:OF/RC:C"}}], "timeline": [{"time": "2026-08-02T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-08-02T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-08-02T22:38:45.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "oduoke (VulDB User)", "type": "reporter"}, {"lang": "en", "value": "VulDB CNA Team", "type": "coordinator"}], "references": [{"url": "https://vuldb.com/vuln/385416", "name": "VDB-385416 | Wavlink WL-NU516U1 nas.cgi fgets stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/385416/cti", "name": "VDB-385416 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-18588", "name": "CVE-2026-18588 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/850500", "name": "Submit #850500 | WAVLINK WL-NU516U1 2026-05-15 (build 708c073-mt7628) Command Injection", "tags": ["third-party-advisory"]}, {"url": "https://github.com/oduoke567/WAVLINK-NU516U1-2026-05-1/blob/main/report2.md", "tags": ["broken-link"]}, {"url": "https://dl.wavlink.com/firmware/RD/WINSTAR_NU516U1-WO-A-2026-07-13-4b8a21f-mt7628-squashfs-sysupgrade.bin", "tags": ["broken-link", "patch"]}], "x_generator": ["VulDB PVTS v202608"]}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "708c073-mt7628"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "WL-NU516U1", "source": "cna", "vendor": "Wavlink"}, "product": "wl-nu516u1", "vendor": "wavlink"}], "created": "2026-08-03T07:45:17.172821+00:00", "updated": "2026-08-03T08:45:03.270052+00:00", "vendors": ["wavlink", "wavlink$PRODUCT$wl-nu516u1"]}