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CVE-2026-9443

A security vulnerability has been detected in Edimax BR-6478AC 1.23. This vulnerability affects the function formL2TPSetup of the file /goform/formL2TPSetup of the component POST Request Handler. The manipulation of the argument L2TPUserName leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:aab25ef0eddc4c8953bd86e338e1584205833ae3b2afc27bd1611ee23ae9366d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"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","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":9,"vectorString":"AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/metrics/3/cvssV2_0

{"metric":{"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","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"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","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/metrics/1/cvssV3_1
cwe · 2 assertions

{"cweId":"CWE-120","description":"Buffer Overflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-119","description":"Memory Corruption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:o:edimax:br-6478ac_firmware:*:*:*:*:*:*:*:*"],"modules":["POST Request Handler"],"product":"BR-6478AC","vendor":"Edimax","versions":[{"status":"affected","version":"1.23"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"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","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":9,"vectorString":"AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/metrics/3/cvssV2_0
{"metric":{"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","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"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","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-120","description":"Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-119","description":"Memory Corruption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/problemTypes/1/descriptions/0

Source references

4 source assertions
{"tags":["exploit"],"url":"https://lavender-bicycle-a5a.notion.site/EDIMAX-BR6478ACV2-formL2TPSetup-34b53a41781f809e9c30c1260cc5d92e?source=copy_link"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/references/3
{"name":"Submit #818452 | Edimax BR6478ACV2 BR6478ACV2_v1.23 Buffer Overflow","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/818452"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/references/2
{"name":"VDB-365424 | Edimax BR-6478AC POST Request formL2TPSetup buffer overflow","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/365424"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/references/0
{"name":"VDB-365424 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/365424/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:55744decba7d2da5a1ff5a6bd793905fab5489d38d2df2810fdf6aef2a397680 · sha256:a9104d36ead4bf62… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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