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CVE-2026-12218

HIGH Exploitation: PoC
8.0
CVSS 3.1
Description
A vulnerability was detected in Yealink SIP-T46U 108.87.50.1. The affected element is the function StartReportInformation of the file /api/inner/beforewifitest of the component Web FastCGI Service. The manipulation of the argument port results in stack-based buffer overflow. Access to the local network is required for this attack. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Metadata

CVE ID
CVE-2026-12218
State
PUBLISHED
Assigner
VulDB
Reserved
2026-06-14 13:54 UTC
Published
2026-06-15 04:15 UTC
Last updated
2026-06-15 10:33 UTC
Primary CWE
CWE-121
Stack-based Buffer Overflow
Vendor / Product
Yealink / SIP-T46U
Sources
cve.org  ·  NVD

Severity & Metrics

8.0 HIGH CVSS 3.1
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
Yealink SIP-T46U — 108.87.50.1
Weakness (CWE)
CWESourceDescription
CWE-119 cna Memory Corruption
CWE-121 cna Stack-based Buffer Overflow
CVSS scores (4)
ScoreSeverityVersionSourceVector
8.6 HIGH 4.0 cna 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
8.0 HIGH 3.1 cna CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
8.0 HIGH 3.0 cna CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
7.7 N/D 2.0 cna AV:A/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR
References (5)
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