CVE•Published 2026-03-31•Modified 2026-07-24•1 article on news•6 live references•NVD data

CVE-2026-5204Tenda · Ch22_firmware

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 17% of all CVEs

Weaknesses (CWE)

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-121Stack-based Buffer Overflow CWE-787Out-of-bounds Write

Description

A vulnerability was determined in Tenda CH22 1.0.0.1. Affected is the function formWebTypeLibrary of the file /goform/webtypelibrary of the component Parameter Handler. This manipulation of the argument webSiteId causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.

Timeline

Published 2026-03-31

Modified 2026-07-24

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-5204

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · OS

os:"Ch22 Firmware"

Hosts Shodan identified as running Ch22 Firmware.

More intel sources (5)

Shodan report

vuln:CVE-2026-5204

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2026-5204