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CVE-2025-7596
published 2025-07-14

CVE-2025-7596: A vulnerability was found in Tenda FH1205 2.0.0.7(775). It has been rated as critical. This issue affects the function formWifiExtraSet of the file…

PriorityP265high8.8CVSS 3.1
AVNACLPRLUINSUCHIHAH
EPSS
0.76%
51.0th percentile
A vulnerability was found in Tenda FH1205 2.0.0.7(775). It has been rated as critical. This issue affects the function formWifiExtraSet of the file /goform/WifiExtraSet. The manipulation of the argument wpapsk_crypto leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Affected

2 ranges
VendorProductVersion rangeFixed in
tendafh1205——
tendafh1205_firmware——

Detection & IOCsextracted from sources · hover to see the quote

url/goform/WifiExtraSet↗
otherwpapsk_crypto=<100+ chars>
snort
alert http any any -> $HOME_NET any (msg:"ET WEB_SPECIFIC_APPS Tenda WifiExtraSet wpapsk_crypto Parameter Buffer Overflow Attempt (CVE-2025-25663, CVE-2025-10838, CVE-2025-7596, CVE-2025-5799)"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:20; content:"/goform/WifiExtraSet"; fast_pattern; http.request_body; content:"wpapsk_crypto|3d|"; pcre:"/^[^&]{100,}(?:&|$)/R"; reference:cve,2025-10838; reference:url,community.emergingthreats.net/t/ruleset-update-summary-2025-10-14-v11039/3081; reference:cve,2025-25663; reference:url,www.cve.org/CVERecord/SearchResults?query=wpapsk_crypto; reference:cve,2025-5799; reference:cve,2025-7596; classtype:web-application-attack; sid:2065201; rev:1; metadata:affected_product Tenda, attack_target Networking_Equipment, tls_state plaintext, created_at 2025_10_15, cve CVE_2025_5799_CVE_2025_10838_CVE_2025_7596_CVE_2025_25663, deployment Perimeter, deployment Internal, performance_impact Low, confidence High, signature_severity Major, tag Exploit, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_10_15, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application; target:dest_ip;)
  • →Look for HTTP POST requests to the exact URI /goform/WifiExtraSet (exactly 20 bytes) targeting Tenda FH1205 devices.
  • →Flag POST body containing the wpapsk_crypto parameter (URL-encoded as wpapsk_crypto=) where the value is 100 or more characters before an ampersand or end-of-body — indicative of a buffer overflow attempt.
  • →The exploit is delivered over plaintext HTTP (not TLS); deploy detection at the network perimeter and internally.
  • →Map to MITRE ATT&CK T1190 (Exploit Public-Facing Application) under tactic TA0001 (Initial Access).
  • →The vulnerability is in the function formWifiExtraSet within the file /goform/WifiExtraSet; the manipulated argument is wpapsk_crypto causing a stack-based buffer overflow. ↗
  • ·The Snort/Suricata rule (ET sid:2065201) also covers three related CVEs (CVE-2025-25663, CVE-2025-10838, CVE-2025-5799) that share the same vulnerable endpoint and parameter; a match does not exclusively confirm CVE-2025-7596.
  • ·Affected firmware is specifically Tenda FH1205 version 2.0.0.7(775); the rule targets Tenda Networking Equipment broadly — tune scope accordingly. ↗
  • ·The exploit has been publicly disclosed and is actively usable; treat any matching traffic as high-severity. ↗

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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