cbcvebase.
CVE-2025-9297
published 2025-08-21

CVE-2025-9297: A vulnerability was detected in Tenda i22 1.0.0.3(4687). This impacts the function formWeixinAuthInfoGet of the file /goform/wxportalauth. Performing…

PriorityP266high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.96%
57.3th percentile
A vulnerability was detected in Tenda i22 1.0.0.3(4687). This impacts the function formWeixinAuthInfoGet of the file /goform/wxportalauth. Performing manipulation of the argument Type results in stack-based buffer overflow. The attack can be initiated remotely. The exploit is now public and may be used.

Affected

2 ranges
VendorProductVersion rangeFixed in
tendai22——
tendai22_firmware——

Detection & IOCsextracted from sources · hover to see the quote

path/goform/wxportalauth
urlhttps://github.com/davybat/IoT-Vuls/blob/main/tenda/formWeixinAuthInfoGet.md
snort
alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Tenda wxportalauth type Parameter Buffer Overflow Attempt (CVE-2025-9297)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:20; content:"/goform/wxportalauth"; fast_pattern; http.request_body; content:"type|3d|"; pcre:"/^[^&]{100,}(?:&|$)/R"; reference:url,github.com/davybat/IoT-Vuls/blob/main/tenda/formWeixinAuthInfoGet.md; reference:cve,2025-9297; classtype:web-application-attack; sid:2064100; rev:1; metadata:affected_product Tenda, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_08_22, cve CVE_2025_9297, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_08_22, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)
  • →Match HTTP POST requests to the exact URI /goform/wxportalauth (bsize:20 enforces exact length match) targeting Tenda i22 devices
  • →Detect oversized 'type' parameter in the POST body: look for 'type=' (hex type|3d|) followed by 100 or more non-ampersand characters, indicating a buffer overflow attempt
  • →The exploit is public; the vulnerable function is formWeixinAuthInfoGet in the file /goform/wxportalauth on Tenda i22 firmware 1.0.0.3(4687). The attack is remotely initiated and requires no authentication context beyond network access. ↗
  • →Traffic is expected in plaintext (TLS state: plaintext); deploy detection at perimeter and internal network boundaries
  • ·Affected product and firmware version are narrowly scoped; tune detection to avoid false positives on other Tenda endpoints
  • ·The Snort/Suricata rule uses a PCRE match on the POST body (100+ chars after 'type='); the threshold of 100 characters may need adjustment based on observed legitimate traffic to this endpoint

CVSS provenance

nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvdv4.07.4HIGHCVSS: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
nvdv2.09.0CRITICALAV:N/AC:L/Au:S/C:C/I:C/A:C
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