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CVE-2026-12222

A vulnerability was determined in Yealink SIP-T46U 108.86.0.118. Affected is the function mod_webd.BlueToothTest of the file /api/inner/bttest of the component Web FastCGI Service. Executing a manipulation of the argument btMac/pin/reserved can lead to stack-based buffer overflow. The attack needs to be done within the local network. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure and is working on a patch to fix it.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5eef5debf2777cdaaaaf8a3452e6e37f2aaade86edf26dd883e6e8c1577c2c77
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,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":7.7,"vectorString":"AV:A/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:C","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/metrics/3/cvssV2_0

{"metric":{"baseScore":8,"baseSeverity":"HIGH","vectorString":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:C","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":8.6,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:A/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:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/metrics/0/cvssV4_0
cwe · 2 assertions

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

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-121","description":"Stack-based Buffer Overflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:yealink:sip-t46u:*:*:*:*:*:*:*:*"],"modules":["Web FastCGI Service"],"product":"SIP-T46U","vendor":"Yealink","versions":[{"status":"affected","version":"108.86.0.118"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":8,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:C","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":7.7,"vectorString":"AV:A/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:C","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/metrics/3/cvssV2_0
{"metric":{"baseScore":8,"baseSeverity":"HIGH","vectorString":"CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:C","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":8.6,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:A/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:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-119","description":"Memory Corruption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-121","description":"Stack-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["broken-link","exploit"],"url":"http://cdn2.v50to.cc/T46U/T46U_mod_webd_BlueToothTest_off_by_one.zip"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/references/4
{"name":"CVE-2026-12222 | CVE Analysis and Report","tags":["third-party-advisory"],"url":"https://vuldb.com/cve/CVE-2026-12222"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/references/2
{"name":"Submit #834602 | yealink T46U 108.86.0.118 Stack-based Buffer Overflow","tags":["third-party-advisory"],"url":"https://vuldb.com/submit/834602"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/references/3
{"name":"VDB-370865 | Yealink SIP-T46U Web FastCGI Service bttest mod_webd.BlueToothTest stack-based overflow","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/vuln/370865"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /containers/cna/references/0
{"name":"VDB-370865 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/vuln/370865/cti"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3ec22e96a10083e6452562cd23e54801efea530e894a15cc0d45eb681f22e692 · sha256:46e37a7e2c393f8c… · /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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