CVE-2025-12232: A vulnerability was detected in Tenda CH22 1.0.0.1. Affected by this vulnerability is the function fromSafeClientFilter of the file /goform/SafeClientFilter…

PriorityP271critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

4.58%

90.5th percentile

A vulnerability was detected in Tenda CH22 1.0.0.1. Affected by this vulnerability is the function fromSafeClientFilter of the file /goform/SafeClientFilter. Performing a manipulation of the argument page results in buffer overflow. The attack can be initiated remotely. The exploit is now public and may be used.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
tenda	ch22	—	—
tenda	ch22_firmware	—	—

Detection & IOCsextracted from sources · hover to see the quote

path/goform/SafeClientFilter

urlhttps://github.com/QIU-DIE/CVE/issues/13

snort

alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Tenda SafeClientFilter page Parameter Buffer Overflow Attempt (CVE-2025-12232)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:24; content:"/goform/SafeClientFilter"; fast_pattern; http.request_body; content:"page|3d|"; pcre:"/^[^&]{100,}(?:&|$)/R"; reference:url,github.com/QIU-DIE/CVE/issues/13; reference:cve,2025-12232; classtype:web-application-attack; sid:2065420; rev:1; metadata:affected_product Tenda, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_10_27, cve CVE_2025_12232, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_27, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)

→Exploit uses HTTP POST method targeting the exact URI /goform/SafeClientFilter with a URI length of exactly 24 bytes.
→Overflow payload is delivered in the HTTP request body via the 'page' parameter (URL-encoded as 'page='), with an oversized value of 100 or more characters before an ampersand or end of body.
→Traffic is expected in plaintext (non-TLS); deploy detection at the network perimeter and internally.
→The vulnerability is in function fromSafeClientFilter; a buffer overflow is triggered by manipulating the 'page' argument remotely. ↗
→Public exploit code is available; treat any matching POST to /goform/SafeClientFilter with a long 'page' value as high-confidence malicious activity. ↗

·Affected product is Tenda CH22 firmware version 1.0.0.1 only; scope detection to that device/firmware version to reduce false positives. ↗
·The Snort/Suricata rule (SID 2065420) uses a PCRE match on the request body; ensure the IDS/IPS engine is configured to inspect HTTP request bodies to avoid missed detections.

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/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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