Vulnerability-Lookup

CVE-2026-18607 (GCVE-0-2026-18607)

Vulnerability from cvelistv5 – Published: 2026-08-03 16:45 – Updated: 2026-08-03 20:23

Title

Wavlink NU516 lighttpd upload.cgi strcpy stack-based overflow

Summary

A security vulnerability has been detected in Wavlink WN572, WN570H, WN573, WN529, WN530, WN531, WN535, etc. WN529, WN530, WN531, WN535, WN536, WN551, WN557 and NU516 up to 20260609. Affected by this issue is the function strcpy of the file upload.cgi of the component lighttpd. The manipulation of the argument HTTP_COOKIE leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.

Severity

8.7 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

8.8 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-121 - Stack-based Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB

References

5 references

URL	Tags
https://vuldb.com/vuln/385530	vdb-entrytechnical-description
https://vuldb.com/vuln/385530/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18607	third-party-advisory
https://vuldb.com/submit/852637	third-party-advisory
https://github.com/0xcc12138/WAVLINK-vul	exploit

Impacted products

12 products

Vendor	Product	Version
Wavlink	WN572	Affected: 20260609 cpe:2.3:a:wavlink:wn572::::::::
Wavlink	WN570H	Affected: 20260609 cpe:2.3:a:wavlink:wn570h::::::::
Wavlink	WN573	Affected: 20260609 cpe:2.3:a:wavlink:wn573::::::::
Wavlink	WN529	Affected: 20260609 cpe:2.3:a:wavlink:wn529::::::::
Wavlink	WN530	Affected: 20260609 cpe:2.3:a:wavlink:wn530::::::::
Wavlink	WN531	Affected: 20260609 cpe:2.3:a:wavlink:wn531::::::::
Wavlink	WN535	Affected: 20260609 cpe:2.3:a:wavlink:wn535::::::::
Wavlink	etc. WN529	Affected: 20260609 cpe:2.3:a:wavlink:etc._wn529::::::::
Wavlink	WN536	Affected: 20260609 cpe:2.3:a:wavlink:wn536::::::::
Wavlink	WN551	Affected: 20260609 cpe:2.3:a:wavlink:wn551::::::::
Wavlink	WN557	Affected: 20260609 cpe:2.3:a:wavlink:wn557::::::::
Wavlink	NU516	Affected: 20260609 cpe:2.3:a:wavlink:nu516::::::::

Credits

0xcc12138 (VulDB User)

Show details on NVD website

JSON

To clipboard

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    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-18607\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-03T20:22:57.235846Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-03T20:23:18.871Z\"}}], \"cna\": {\"title\": \"Wavlink NU516 lighttpd upload.cgi strcpy stack-based overflow\", \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"0xcc12138 (VulDB User)\"}], \"metrics\": [{\"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 8.7, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P\"}}, {\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R\"}}, {\"cvssV3_0\": {\"version\": \"3.0\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R\"}}, {\"cvssV2_0\": {\"version\": \"2.0\", \"baseScore\": 9, \"vectorString\": \"AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR\"}}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:wavlink:wn572:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN572\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn570h:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN570H\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn573:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN573\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn529:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN529\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn530:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN530\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn531:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN531\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn535:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN535\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:etc._wn529:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"etc. WN529\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn530:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN530\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn531:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN531\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn535:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN535\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn536:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN536\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn551:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN551\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:wn557:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"WN557\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}, {\"cpes\": [\"cpe:2.3:a:wavlink:nu516:*:*:*:*:*:*:*:*\"], \"vendor\": \"Wavlink\", \"modules\": [\"lighttpd\"], \"product\": \"NU516\", \"versions\": [{\"status\": \"affected\", \"version\": \"20260609\"}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-08-03T00:00:00.000Z\", \"value\": \"Advisory disclosed\"}, {\"lang\": \"en\", \"time\": \"2026-08-03T02:00:00.000Z\", \"value\": \"VulDB entry created\"}, {\"lang\": \"en\", \"time\": \"2026-08-03T09:22:45.000Z\", \"value\": \"VulDB entry last update\"}], \"references\": [{\"url\": \"https://vuldb.com/vuln/385530\", \"name\": \"VDB-385530 | Wavlink NU516 lighttpd upload.cgi strcpy stack-based overflow\", \"tags\": [\"vdb-entry\", \"technical-description\"]}, {\"url\": \"https://vuldb.com/vuln/385530/cti\", \"name\": \"VDB-385530 | CTI Indicators (IOB, IOC, IOA)\", \"tags\": [\"signature\", \"permissions-required\"]}, {\"url\": \"https://vuldb.com/cve/CVE-2026-18607\", \"name\": \"CVE-2026-18607 | CVE Analysis and Report\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://vuldb.com/submit/852637\", \"name\": \"Submit #852637 | WAVLINK Multiple Router Series (WN572, WN570H, WN573, WN529, WN530, WN531, WN535, etc.) WN529, WN530, WN531, WN535, WN536, WN551, WN557, NU516,and so on Stack-based Buffer Overflow\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://github.com/0xcc12138/WAVLINK-vul\", \"tags\": [\"exploit\"]}], \"x_generator\": [\"VulDB PVTS v202608\"], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A security vulnerability has been detected in Wavlink WN572, WN570H, WN573, WN529, WN530, WN531, WN535, etc. WN529, WN530, WN531, WN535, WN536, WN551, WN557 and NU516 up to 20260609. Affected by this issue is the function strcpy of the file upload.cgi of the component lighttpd. The manipulation of the argument HTTP_COOKIE leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-121\", \"description\": \"Stack-based Buffer Overflow\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-119\", \"description\": \"Memory Corruption\"}]}], \"providerMetadata\": {\"orgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"shortName\": \"VulDB\", \"dateUpdated\": \"2026-08-03T16:45:09.268Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-18607\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-03T20:23:24.093Z\", \"dateReserved\": \"2026-08-03T07:17:39.882Z\", \"assignerOrgId\": \"1af790b2-7ee1-4545-860a-a788eba489b5\", \"datePublished\": \"2026-08-03T16:45:09.268Z\", \"assignerShortName\": \"VulDB\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

GHSA-82RW-J2XW-2766

Vulnerability from github – Published: 2026-08-03 18:30 – Updated: 2026-08-03 18:30

Details

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

7.4 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

Show details on source website

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To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-18607"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-03T17:16:35Z",
    "severity": "HIGH"
  },
  "details": "A security vulnerability has been detected in Wavlink WN572, WN570H, WN573, WN529, WN530, WN531, WN535, etc. WN529, WN530, WN531, WN535, WN536, WN551, WN557 and NU516 up to 20260609. Affected by this issue is the function strcpy of the file upload.cgi of the component lighttpd. The manipulation of the argument HTTP_COOKIE leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed publicly and may be used.",
  "id": "GHSA-82rw-j2xw-2766",
  "modified": "2026-08-03T18:30:48Z",
  "published": "2026-08-03T18:30:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18607"
    },
    {
      "type": "WEB",
      "url": "https://github.com/0xcc12138/WAVLINK-vul"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-18607"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/852637"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/385530"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/385530/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-18607 (GCVE-0-2026-18607)

GHSA-82RW-J2XW-2766

Tags

Sightings

Nomenclature